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  4. Repainting of dialog box takes time.

Repainting of dialog box takes time.

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  • R R jeev K R

    Is it working fine in the initial startup? You mentioned above,"After some time use of application, application takes time to repaint the dialog box". thats why i am asking so...

    R Offline
    R Offline
    R jeev K R
    wrote on last edited by
    #5

    I think there is memory leak in your application. Check all the allocated memory status. After use release all allocated memory. Check it especially in bitmap loading code. Good Luck...

    L 1 Reply Last reply
    0
    • L Le rner

      When just start the application its working fine,but after some time its behaves like this. its occur on simple dialog box restore and Domodal of dialog box etc,here no button function is performed. please help me what can i do 4 this. thanks in advance.

      K Offline
      K Offline
      KingsGambit
      wrote on last edited by
      #6

      May be you can check for GDI leaks & memory leaks in your application. I think you can use Task Manager to verify it.

      1 Reply Last reply
      0
      • R R jeev K R

        I think there is memory leak in your application. Check all the allocated memory status. After use release all allocated memory. Check it especially in bitmap loading code. Good Luck...

        L Offline
        L Offline
        Le rner
        wrote on last edited by
        #7

        Output window is like this

        ‘Test.exe’: Loaded 'C:\Windows\System32\ntdll.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\kernel32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\user32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\gdi32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\advapi32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\rpcrt4.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\msimg32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\comdlg32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\msvcrt.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\shlwapi.dll'
        ‘Test.exe’: Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.6002.18005_none_5cb72f96088b0de0\comctl32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\shell32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\winspool.drv'
        ‘Test.exe’: Loaded 'C:\Windows\System32\oledlg.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\ole32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\oleaut32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\winmm.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\oleacc.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\imm32.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\msctf.dll'
        ‘Test.exe’: Loaded 'C:\Windows\winsxs\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.0.6002.18005_none_9e50b396ca17ae07\GdiPlus.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\lpk.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\usp10.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\uxtheme.dll'
        ‘Test.exe’: Loaded 'C:\Windows\System32\dwmapi.dll'
        Detected memory leaks!

        here i found Detected memory leaks!,but i dont know how can get the location of this memory leak, how can get at which porint or on wich function memory leaks. please help me for this. thanks.

        R 1 Reply Last reply
        0
        • L Le rner

          Output window is like this

          ‘Test.exe’: Loaded 'C:\Windows\System32\ntdll.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\kernel32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\user32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\gdi32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\advapi32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\rpcrt4.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\msimg32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\comdlg32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\msvcrt.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\shlwapi.dll'
          ‘Test.exe’: Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.6002.18005_none_5cb72f96088b0de0\comctl32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\shell32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\winspool.drv'
          ‘Test.exe’: Loaded 'C:\Windows\System32\oledlg.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\ole32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\oleaut32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\winmm.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\oleacc.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\imm32.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\msctf.dll'
          ‘Test.exe’: Loaded 'C:\Windows\winsxs\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.0.6002.18005_none_9e50b396ca17ae07\GdiPlus.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\lpk.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\usp10.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\uxtheme.dll'
          ‘Test.exe’: Loaded 'C:\Windows\System32\dwmapi.dll'
          Detected memory leaks!

          here i found Detected memory leaks!,but i dont know how can get the location of this memory leak, how can get at which porint or on wich function memory leaks. please help me for this. thanks.

          R Offline
          R Offline
          R jeev K R
          wrote on last edited by
          #8

          Can i see your code for loading the bitmap...?

          L 1 Reply Last reply
          0
          • R R jeev K R

            Can i see your code for loading the bitmap...?

            L Offline
            L Offline
            Le rner
            wrote on last edited by
            #9

            For buttons i use this.

            CBitmapButton m_t_btn;
            m_t_btn.LoadBitmaps(IDB_B_N, IDB_B_P, IDB_B_N, IDB_B_P);
            m_t_now_btn.SizeToContent();

            here IDB_B_N and IDB_B_P//id of image

            and on dialog box i m using picture ctrl pf bitmap type and provide image id to used

            R 1 Reply Last reply
            0
            • L Le rner

              For buttons i use this.

              CBitmapButton m_t_btn;
              m_t_btn.LoadBitmaps(IDB_B_N, IDB_B_P, IDB_B_N, IDB_B_P);
              m_t_now_btn.SizeToContent();

              here IDB_B_N and IDB_B_P//id of image

              and on dialog box i m using picture ctrl pf bitmap type and provide image id to used

              R Offline
              R Offline
              R jeev K R
              wrote on last edited by
              #10

              Is any memmory leak from CBitmapButton class..? Use this utility separately in a test app to check the behavior...

              L 1 Reply Last reply
              0
              • R R jeev K R

                Is any memmory leak from CBitmapButton class..? Use this utility separately in a test app to check the behavior...

                L Offline
                L Offline
                Le rner
                wrote on last edited by
                #11

                actully i dont know how can i detected memory leak in application, so how can i know memory leak occur from CBitmapButton or not.

                R E 2 Replies Last reply
                0
                • L Le rner

                  actully i dont know how can i detected memory leak in application, so how can i know memory leak occur from CBitmapButton or not.

                  R Offline
                  R Offline
                  R jeev K R
                  wrote on last edited by
                  #12

                  Create a test application that using CBitmapButton class. Use the above code in that application and continuously use that application. Check the usage in Task Manager... It will help you to find the memory leak is from CBitmapButton ...

                  L 1 Reply Last reply
                  0
                  • R R jeev K R

                    Create a test application that using CBitmapButton class. Use the above code in that application and continuously use that application. Check the usage in Task Manager... It will help you to find the memory leak is from CBitmapButton ...

                    L Offline
                    L Offline
                    Le rner
                    wrote on last edited by
                    #13

                    if i use application without CBitmapButton code,its still behave like this.

                    R 1 Reply Last reply
                    0
                    • L Le rner

                      if i use application without CBitmapButton code,its still behave like this.

                      R Offline
                      R Offline
                      R jeev K R
                      wrote on last edited by
                      #14

                      That means, the problem is not from the CBitmapButton. Now check your dialog skinning code.Just like commenting the code for coloring the dialog or controls. This way you can find out the exact problem...

                      L 1 Reply Last reply
                      0
                      • R R jeev K R

                        That means, the problem is not from the CBitmapButton. Now check your dialog skinning code.Just like commenting the code for coloring the dialog or controls. This way you can find out the exact problem...

                        L Offline
                        L Offline
                        Le rner
                        wrote on last edited by
                        #15

                        i use this for color

                        CBrush m_brush;
                        m_brush.CreateSolidBrush(RGB(241,244,250));//in OnInitDialog

                        HBRUSH CTest::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
                        {
                        HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

                        switch (nCtlColor)
                        {
                        	case CTLCOLOR\_EDIT:
                        		pDC->SetTextColor(RGB(0,0,0));
                        		pDC->SetBkColor(RGB(255,255,255));
                        		return hbr;
                        
                        	case CTLCOLOR\_STATIC:			
                        		LOGBRUSH logbrush;
                        		m\_brush.GetLogBrush( &logbrush );
                        		pDC->SetTextColor(RGB(0,0,0));
                        		pDC->SetBkColor(logbrush.lbColor);
                        		return m\_brush;
                        		
                        
                        	case CTLCOLOR\_BTN:
                        	case CTLCOLOR\_MSGBOX:
                        	case CTLCOLOR\_DLG:
                        		return m\_brush;
                        	
                        	default:
                        		return m\_brush;
                        }
                        

                        }

                        BOOL CTest::OnEraseBkgnd(CDC *pDC)
                        {
                        CPen myPen,hpenOld;
                        CRect rect;
                        GetClientRect(&rect);
                        for(int i=0;i<rect.bottom;)
                        { myPen.CreatePen(PS_SOLID,1,RGB(241,244,250));
                        pDC->SelectObject(&myPen);
                        pDC->MoveTo(0,i);
                        pDC->LineTo(rect.right,i);
                        i++;
                        myPen.DeleteObject();
                        }
                        return 1
                        }

                        R M 2 Replies Last reply
                        0
                        • L Le rner

                          actully i dont know how can i detected memory leak in application, so how can i know memory leak occur from CBitmapButton or not.

                          E Offline
                          E Offline
                          Eugen Podsypalnikov
                          wrote on last edited by
                          #16

                          Could you post your BitmapButton.cpp here ? :)

                          Check your definition of Irrationality[^] :) 1 - Avicenna 5 - Hubbard 3 - Own definition

                          L 1 Reply Last reply
                          0
                          • E Eugen Podsypalnikov

                            Could you post your BitmapButton.cpp here ? :)

                            Check your definition of Irrationality[^] :) 1 - Avicenna 5 - Hubbard 3 - Own definition

                            L Offline
                            L Offline
                            Le rner
                            wrote on last edited by
                            #17

                            CBitmapButton is a Visual studio class.

                            E 1 Reply Last reply
                            0
                            • L Le rner

                              i use this for color

                              CBrush m_brush;
                              m_brush.CreateSolidBrush(RGB(241,244,250));//in OnInitDialog

                              HBRUSH CTest::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
                              {
                              HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

                              switch (nCtlColor)
                              {
                              	case CTLCOLOR\_EDIT:
                              		pDC->SetTextColor(RGB(0,0,0));
                              		pDC->SetBkColor(RGB(255,255,255));
                              		return hbr;
                              
                              	case CTLCOLOR\_STATIC:			
                              		LOGBRUSH logbrush;
                              		m\_brush.GetLogBrush( &logbrush );
                              		pDC->SetTextColor(RGB(0,0,0));
                              		pDC->SetBkColor(logbrush.lbColor);
                              		return m\_brush;
                              		
                              
                              	case CTLCOLOR\_BTN:
                              	case CTLCOLOR\_MSGBOX:
                              	case CTLCOLOR\_DLG:
                              		return m\_brush;
                              	
                              	default:
                              		return m\_brush;
                              }
                              

                              }

                              BOOL CTest::OnEraseBkgnd(CDC *pDC)
                              {
                              CPen myPen,hpenOld;
                              CRect rect;
                              GetClientRect(&rect);
                              for(int i=0;i<rect.bottom;)
                              { myPen.CreatePen(PS_SOLID,1,RGB(241,244,250));
                              pDC->SelectObject(&myPen);
                              pDC->MoveTo(0,i);
                              pDC->LineTo(rect.right,i);
                              i++;
                              myPen.DeleteObject();
                              }
                              return 1
                              }

                              R Offline
                              R Offline
                              R jeev K R
                              wrote on last edited by
                              #18

                              I cant find any problem in your code... Any way just comment your code in the OnEraseBkgnd and try to sort out the problem... If the problem is still there then we can avoid this one also from the problem list...

                              1 Reply Last reply
                              0
                              • L Le rner

                                CBitmapButton is a Visual studio class.

                                E Offline
                                E Offline
                                Eugen Podsypalnikov
                                wrote on last edited by
                                #19

                                OK :) Do you have the following in all used *.cpp ?

                                #ifdef _DEBUG
                                #define new DEBUG_NEW
                                #endif

                                What output comes now after the exiting ?

                                Check your definition of Irrationality[^] :) 1 - Avicenna 5 - Hubbard 3 - Own definition

                                L 1 Reply Last reply
                                0
                                • E Eugen Podsypalnikov

                                  OK :) Do you have the following in all used *.cpp ?

                                  #ifdef _DEBUG
                                  #define new DEBUG_NEW
                                  #endif

                                  What output comes now after the exiting ?

                                  Check your definition of Irrationality[^] :) 1 - Avicenna 5 - Hubbard 3 - Own definition

                                  L Offline
                                  L Offline
                                  Le rner
                                  wrote on last edited by
                                  #20

                                  yes i add this in all *.cpp

                                  'Test.exe': Loaded 'C:\Windows\System32\ntdll.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\kernel32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\user32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\gdi32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\advapi32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\rpcrt4.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\msimg32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\comdlg32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\msvcrt.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\shlwapi.dll'
                                  'Test.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.6002.18005_none_5cb72f96088b0de0\comctl32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\shell32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\winspool.drv'
                                  'Test.exe': Loaded 'C:\Windows\System32\oledlg.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\ole32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\oleaut32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\winmm.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\oleacc.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\imm32.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\msctf.dll'
                                  'Test.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.0.6002.18005_none_9e50b396ca17ae07\GdiPlus.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\lpk.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\usp10.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\uxtheme.dll'
                                  'Test.exe': Loaded 'C:\Windows\System32\dwmapi.dll'
                                  'Test.exe': Unloaded 'C:\Windows\System32\dwmapi.dll'
                                  Detected memory leaks!
                                  Dumping objects ->
                                  {235} normal block at 0x00286728, 145 bytes long.
                                  Data: < % d > C0 25 C9 01 64 00 00 00 80 00 00 00 01 00 00 00
                                  {227} normal block at 0x002866D8, 20 bytes long.
                                  Data: < % > C0 25 C9 01 03 00 00 00 03 00 00 00 01 00 00 00
                                  {226} normal block at 0x00286640, 85 bytes long.
                                  Data: < % D D > C0 25 C9 01 44 00 00 00 44 00 00 00 01 00 00 00
                                  {225} normal block at 0x00286598, 103 bytes long.
                                  Data: < % V V > C0 25 C9 01 56 00 00 00 56 00 00 00 01 00 00 00
                                  Object dump complete.
                                  The program '[3536] Test.exe: Native' has exited with code 0 (0x0).

                                  E 1 Reply Last reply
                                  0
                                  • L Le rner

                                    yes i add this in all *.cpp

                                    'Test.exe': Loaded 'C:\Windows\System32\ntdll.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\kernel32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\user32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\gdi32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\advapi32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\rpcrt4.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\msimg32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\comdlg32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\msvcrt.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\shlwapi.dll'
                                    'Test.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.6002.18005_none_5cb72f96088b0de0\comctl32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\shell32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\winspool.drv'
                                    'Test.exe': Loaded 'C:\Windows\System32\oledlg.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\ole32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\oleaut32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\winmm.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\oleacc.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\imm32.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\msctf.dll'
                                    'Test.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.0.6002.18005_none_9e50b396ca17ae07\GdiPlus.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\lpk.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\usp10.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\uxtheme.dll'
                                    'Test.exe': Loaded 'C:\Windows\System32\dwmapi.dll'
                                    'Test.exe': Unloaded 'C:\Windows\System32\dwmapi.dll'
                                    Detected memory leaks!
                                    Dumping objects ->
                                    {235} normal block at 0x00286728, 145 bytes long.
                                    Data: < % d > C0 25 C9 01 64 00 00 00 80 00 00 00 01 00 00 00
                                    {227} normal block at 0x002866D8, 20 bytes long.
                                    Data: < % > C0 25 C9 01 03 00 00 00 03 00 00 00 01 00 00 00
                                    {226} normal block at 0x00286640, 85 bytes long.
                                    Data: < % D D > C0 25 C9 01 44 00 00 00 44 00 00 00 01 00 00 00
                                    {225} normal block at 0x00286598, 103 bytes long.
                                    Data: < % V V > C0 25 C9 01 56 00 00 00 56 00 00 00 01 00 00 00
                                    Object dump complete.
                                    The program '[3536] Test.exe: Native' has exited with code 0 (0x0).

                                    E Offline
                                    E Offline
                                    Eugen Podsypalnikov
                                    wrote on last edited by
                                    #21
                                    1. Try to create, select and delete your background pen outside the drawing loop. 2) Could you post your *.cpp here ? :)

                                    Check your definition of Irrationality[^] :) 1 - Avicenna 5 - Hubbard 3 - Own definition

                                    L 1 Reply Last reply
                                    0
                                    • E Eugen Podsypalnikov
                                      1. Try to create, select and delete your background pen outside the drawing loop. 2) Could you post your *.cpp here ? :)

                                      Check your definition of Irrationality[^] :) 1 - Avicenna 5 - Hubbard 3 - Own definition

                                      L Offline
                                      L Offline
                                      Le rner
                                      wrote on last edited by
                                      #22

                                      Eugen Podsypalnikov wrote:

                                      Try to create, select and delete your background pen outside the drawing loop.

                                      thanks its works

                                      1 Reply Last reply
                                      0
                                      • L Le rner

                                        i use this for color

                                        CBrush m_brush;
                                        m_brush.CreateSolidBrush(RGB(241,244,250));//in OnInitDialog

                                        HBRUSH CTest::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
                                        {
                                        HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

                                        switch (nCtlColor)
                                        {
                                        	case CTLCOLOR\_EDIT:
                                        		pDC->SetTextColor(RGB(0,0,0));
                                        		pDC->SetBkColor(RGB(255,255,255));
                                        		return hbr;
                                        
                                        	case CTLCOLOR\_STATIC:			
                                        		LOGBRUSH logbrush;
                                        		m\_brush.GetLogBrush( &logbrush );
                                        		pDC->SetTextColor(RGB(0,0,0));
                                        		pDC->SetBkColor(logbrush.lbColor);
                                        		return m\_brush;
                                        		
                                        
                                        	case CTLCOLOR\_BTN:
                                        	case CTLCOLOR\_MSGBOX:
                                        	case CTLCOLOR\_DLG:
                                        		return m\_brush;
                                        	
                                        	default:
                                        		return m\_brush;
                                        }
                                        

                                        }

                                        BOOL CTest::OnEraseBkgnd(CDC *pDC)
                                        {
                                        CPen myPen,hpenOld;
                                        CRect rect;
                                        GetClientRect(&rect);
                                        for(int i=0;i<rect.bottom;)
                                        { myPen.CreatePen(PS_SOLID,1,RGB(241,244,250));
                                        pDC->SelectObject(&myPen);
                                        pDC->MoveTo(0,i);
                                        pDC->LineTo(rect.right,i);
                                        i++;
                                        myPen.DeleteObject();
                                        }
                                        return 1
                                        }

                                        M Offline
                                        M Offline
                                        Mohan Ramachandra
                                        wrote on last edited by
                                        #23

                                        Le@rner wrote:

                                        BOOL CTest::OnEraseBkgnd(CDC *pDC) { CPen myPen,hpenOld; CRect rect; GetClientRect(&rect); for(int i=0;iSelectObject(&myPen); pDC->MoveTo(0,i); pDC->LineTo(rect.right,i); i++; myPen.DeleteObject(); } return 1 }

                                        Actually you are filling dialog with RGB(241,244,250) color. Change the OnEraseBkgnd

                                        BOOL CTest::OnEraseBkgnd(CDC *pDC)
                                        {
                                        CRect rect;
                                        GetClientRect(&rect);
                                        pDC->FillSolidRect(rect,RGB(241,244,250));
                                        return TRUE;
                                        }

                                        to avoid for loop, unnecessary creation and destroying of pen,and filling dialog background color using LineTo and MoveTo functions. This one can make you drawing bit faster.

                                        modified on Tuesday, March 9, 2010 8:00 AM

                                        L 1 Reply Last reply
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                                        • M Mohan Ramachandra

                                          Le@rner wrote:

                                          BOOL CTest::OnEraseBkgnd(CDC *pDC) { CPen myPen,hpenOld; CRect rect; GetClientRect(&rect); for(int i=0;iSelectObject(&myPen); pDC->MoveTo(0,i); pDC->LineTo(rect.right,i); i++; myPen.DeleteObject(); } return 1 }

                                          Actually you are filling dialog with RGB(241,244,250) color. Change the OnEraseBkgnd

                                          BOOL CTest::OnEraseBkgnd(CDC *pDC)
                                          {
                                          CRect rect;
                                          GetClientRect(&rect);
                                          pDC->FillSolidRect(rect,RGB(241,244,250));
                                          return TRUE;
                                          }

                                          to avoid for loop, unnecessary creation and destroying of pen,and filling dialog background color using LineTo and MoveTo functions. This one can make you drawing bit faster.

                                          modified on Tuesday, March 9, 2010 8:00 AM

                                          L Offline
                                          L Offline
                                          Le rner
                                          wrote on last edited by
                                          #24

                                          thanks it works

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