CDialog

Hamid Taebi

you ca use WM_CTLCOLORor WM_PAINT_**

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whitesky

User 3037427

But i want to chage the background depending on the color specified dynamically. I am getting an exception when i post the WM_CTLCOLOR message . Thanks for ur reply,

Hamid Taebi

i guess you getting exception because use a brush,yes? see here maybe it is some helpful to you void CAnswerDlg::OnPaint() { CPaintDC dc(this); // device context for painting dc.FillSolidRect(0,0,GetSystemMetrics (SM_CXSCREEN),GetSystemMetrics (SM_CYSCREEN), RGB(53,97,200)); } -------------- HBRUSH CAnswerDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); return (HBRUSH)GetStockObject(WHITE_BRUSH); }_**

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whitesky

NiceNaidu fo

Try this CRect rc; GetClientRect(&rc); // // Paint the client in the specified background color // pDC->FillSolidRect(&rc, m_clrBack); Appu.. "If you judge people, you have no time to love them."

NiceNaidu fo

Hey Sruthi, Chk this.This contains everything. http://www.nntu.sci-nnov.ru/DISLRN/cpppage/q117778.htm[^] Appu.. "If you judge people, you have no time to love them."

User 3037427

The code was working fine. But the controls like edit box etc.. are not visible bcoz of FillSolidRect(). How can i solve this problem :)

Hamid Taebi

Are you sure i test your problem but these are visible i used this code (editbox,button,radio,..)are visible COLORREF Color; Color=GetDC()->GetBkColor(); .... .... void CAnswerDlg::OnPaint() { CPaintDC dc(this); // device context for painting dc.FillSolidRect(0,0,GetSystemMetrics (SM_CXSCREEN),GetSystemMetrics (SM_CYSCREEN), Color); } void CAnswerDlg::OnBnClickedButton1() { Color=RGB(53,97,200); Invalidate(); }_**

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whitesky

Viorel

I think the appropriate place to change the background colour of your dialog box is the handler for WM_ERASEBKGND notification. You can put here just two lines:

BOOL CMyDlg::OnEraseBkgnd(CDC* pDC)
{
	pDC->FillRect(CRect(0,0,32000,32000), &CBrush(RGB(0,0,255))); // blue
	return TRUE;
}

If you need to vary the colour (or just to optimize the solution), make a CBrush member variable and use CreateSolidBrush to set the colour. You can use CreatePatternBrush or CreateHatchBrush to have another kind of background. -- modified at 3:13 Friday 16th June, 2006

Naveen

one way HBRUSH MYDialog::OnCtlColor( CDC* pDC_i, CWnd* pWnd_i, UINT uCtlColor_i ) { HBRUSH hDefaultBrush = CDialog::OnCtlColor( pDC_i, pWnd_i, uCtlColor_i ); if( CTLCOLOR_DLG == uCtlColor_i ) { // Return a black brush so that the background become balck return reinterpret_cast(GetStockObject( BLACK_BRUSH )); } return hDefaultBrush; } Another way from the InitInstance of the App class u may call SetDialogBkColor( RGB(255,0,0) ) nave

User 3037427

But the background color is not changing. Here is my code: OnPaint() { ............. CSliderApp* app=(CSliderApp*)AfxGetApp(); app->ChangeDialogColor((COLORREF)m_clr.GetPos()); } void CSliderApp::ChangeDialogColor(COLORREF ref) { SetDialogBkColor(ref); } Is there anything wrong:confused:

Hamid Taebi

what error you have previous error can you show your code that how to use to change background color_**

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whitesky

Viorel

If you are using VS 2003 or VS 2005, you will found that the definition of SetDialogBkColor function in afxwin2.inl file is:

_AFXWIN_INLINE void CWinApp::SetDialogBkColor(COLORREF /*clrCtlBk*/, COLORREF /*clrCtlText*/)
{
}

Therefore it does nothing. Documentation says that it is obsolete. You should consider other solutions.

Eytukan

Though you could do it by these ways, HandlingWM_ERASEBKGND is the right one for it.

--[:jig:]-- [My Current Status]

Naveen

ok... i Understood instead of calling the ChangeDialogColor from onPaint call this Function as the first line of OnCtlColor funtion nave

Hamid Taebi

but i want to know why he cant show controls its attract for me to find answer for this question (of course i need to see his code that how to use)_**

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whitesky

User 3037427

No its not working. Thanks for ur reply.:)

Naveen

ok another way... forgot every thing done before...Now do as below 1. Create a member variable of CBrush say m_BkBrush 2. Write Function like this ChangeColor( COLORREF clr_i ) { if( m_BkBrush.m_hObject ) m_BkBrush.DeleteObject(); m_BkBrush.CreateSolidBrush( clr_i ) Invalidate(); } 3. Call this function in the OnInitDialog and where ever u want to change the color 4. now overide the WM_CTLCOLOR message and inside that write as below HBRUSH MYDialog::OnCtlColor( CDC* pDC_i, CWnd* pWnd_i, UINT uCtlColor_i ) { HBRUSH hDefaultBrush = CDialog::OnCtlColor( pDC_i, pWnd_i, uCtlColor_i ); if( CTLCOLOR_DLG == uCtlColor_i ) { return m_BkBrush; } return hDefaultBrush; } try and tell me the result..;) nave

User 3037427

Sorry, its not working.:(

Naveen

ok yaar..I cannot figure out why its not working.... Well...Where r u working..? I am from India->Kerala.. nave

User 3037427

My code is: BOOL CSliderDlg::OnEraseBkgnd(CDC* pDC) { if(m_clr.GetPos()!=0) { int color=m_clr.GetPos(); COLORREF clr=RGB(color,color,color); CRect rect; GetClientRect(&rect); pDC->FillSolidRect(&rect,clr); } return CDialog::OnEraseBkgnd(pDC); } I am calling this function from WM_HSCROLL handler. m_clr is the slider ctrl. If there is any mistake in my, let me that mistake. Thanx.:)