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  4. How to get the HWND of mfc DialogBox for .Net

How to get the HWND of mfc DialogBox for .Net

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csharpc++helptutorialquestion
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  • L LaHaHa

    hr got E_HANDLE again! Please help!

    M Offline
    M Offline
    Mark Salsbery
    wrote on last edited by
    #26

    Also, what are the properties of your dialog resource? Try setting the dialog's "Overlapped Window" property to true.

    L 1 Reply Last reply
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    • M Mark Salsbery

      Also, what are the properties of your dialog resource? Try setting the dialog's "Overlapped Window" property to true.

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      LaHaHa
      wrote on last edited by
      #27

      The setting the dialog's "Overlapped Window" property is changed to true, but the result is the same. g_pJoystick = 0x001672d4 hwndMain = 0x0007059c {unused=???} hr = E_HANDLE Please help!

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      • L LaHaHa

        hr got E_HANDLE again! Please help!

        M Offline
        M Offline
        Mark Salsbery
        wrote on last edited by
        #28

        Hmm something else is going wrong. The dialog doesn't have the WS_CHILD style does it? Maybe a dialog is unacceptable as a "top-level window"? Just for the heck of it, maybe try calling your InitDirectInput() from your dialog's WM_INITDIALOG handler.

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        • M Mark Salsbery

          Hmm something else is going wrong. The dialog doesn't have the WS_CHILD style does it? Maybe a dialog is unacceptable as a "top-level window"? Just for the heck of it, maybe try calling your InitDirectInput() from your dialog's WM_INITDIALOG handler.

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          LaHaHa
          wrote on last edited by
          #29

          I have created the project again. Now it will not get the E_HANDLE. The InitDirectInput(*this) coding is called from OnTimer as before. It can detect the joystick, but it cannot get any data from the joystick. The coding are if(!FAILED(InitDirectInput(*this))) { if( NULL != g_pJoystick ) { HRESULT hr; TCHAR strText[512] = {0}; // Device state text DIJOYSTATE2 js; // DInput joystick state // Poll the device to read the current state hr = g_pJoystick->Poll(); if(FAILED(hr) ) { hr = g_pJoystick->Acquire(); while( hr == DIERR_INPUTLOST ) hr = g_pJoystick->Acquire(); } if( !FAILED( hr = g_pJoystick->GetDeviceState( sizeof(DIJOYSTATE2), &js ) ) ) { for( int i = 0; i < 128; i++ ) { if ( js.rgbButtons[i] & 0x80 ) { TCHAR sz[128]; StringCchPrintf( sz, 128, TEXT("%02d "), i ); StringCchCat( strText, 512, sz ); } } } Please help!

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          • L LaHaHa

            HRESULT InitDirectInput(); Void CT1Dlg::OnTimer(UINT nIDEvent) { // TODO: Add your message handler code here and/or call default switch (nIDEvent) { case 5: KillTimer(5); if(!FAILED(InitDirectInput())) { . . . HRESULT InitDirectInput() { HRESULT hr; if( FAILED( hr = DirectInput8Create( GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (VOID**)&g_pDI, NULL ) ) ) return hr; if( FAILED( hr = g_pDI->EnumDevices( DI8DEVCLASS_GAMECTRL, EnumJoysticksCallback, NULL, DIEDFL_ATTACHEDONLY ) ) ) return hr; if( NULL == g_pJoystick ) { // MessageBox( NULL, TEXT("Joystick not found. The sample will now exit."), // TEXT("DirectInput Sample"), // MB_ICONERROR | MB_OK ); return 0; } if( FAILED( hr = g_pJoystick->SetDataFormat( &c_dfDIJoystick2 ) ) ) return hr; HWND hDlg=AfxGetMainWnd()->GetSafeHwnd(); if( FAILED( hr = g_pJoystick->SetCooperativeLevel(hDlg, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) return hr; if( FAILED( hr = g_pJoystick->EnumObjects( EnumObjectsCallback, (VOID*)hDlg, DIDFT_ALL ) ) ) return hr; return S_OK; } I just call it by OnTimer() function. Please help!

            M Offline
            M Offline
            Mark Salsbery
            wrote on last edited by
            #30

            I don't see anything except GetDeviceState() can return DIERR_INPUTLOST but Acquire() doesn't.

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            • M Mark Salsbery

              I don't see anything except GetDeviceState() can return DIERR_INPUTLOST but Acquire() doesn't.

              L Offline
              L Offline
              LaHaHa
              wrote on last edited by
              #31

              I found that the first Poll() get "Invalid". After the Acquire(), the hr is S_OK. Then if I Poll() it again, it will get a S_False. Why? Please help!

              M 3 Replies Last reply
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              • L LaHaHa

                I found that the first Poll() get "Invalid". After the Acquire(), the hr is S_OK. Then if I Poll() it again, it will get a S_False. Why? Please help!

                M Offline
                M Offline
                Mark Salsbery
                wrote on last edited by
                #32

                LaHaHa wrote:

                I found that the first Poll() get "Invalid". After the Acquire(), the hr is S_OK. Then if I Poll() it again, it will get a S_False. Why?

                Poll returns what? DI_OK, DI_NOEFFECT or error DIERR_INPUTLOST, DIERR_NOTACQUIRED, or DIERR_NOTINITIALIZED? You only need to acquire the device once right?

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                • M Mark Salsbery

                  LaHaHa wrote:

                  I found that the first Poll() get "Invalid". After the Acquire(), the hr is S_OK. Then if I Poll() it again, it will get a S_False. Why?

                  Poll returns what? DI_OK, DI_NOEFFECT or error DIERR_INPUTLOST, DIERR_NOTACQUIRED, or DIERR_NOTINITIALIZED? You only need to acquire the device once right?

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                  L Offline
                  LaHaHa
                  wrote on last edited by
                  #33

                  After I put the InitDirectInput(*this) in the OnInitDialog(), it is alright. But my program need to check the joystick to be available periodically. So how can I do it? Please help!

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                  • L LaHaHa

                    I found that the first Poll() get "Invalid". After the Acquire(), the hr is S_OK. Then if I Poll() it again, it will get a S_False. Why? Please help!

                    M Offline
                    M Offline
                    Mark Salsbery
                    wrote on last edited by
                    #34

                    check if it's available periodically or check for input? Are you going to poll or use events and separate thread(s)? p.s. sorry I'm replying to different messages - The site is not letting me reply sometimes :laugh:

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                    • M Mark Salsbery

                      check if it's available periodically or check for input? Are you going to poll or use events and separate thread(s)? p.s. sorry I'm replying to different messages - The site is not letting me reply sometimes :laugh:

                      L Offline
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                      LaHaHa
                      wrote on last edited by
                      #35

                      If the joystick is plugged at the beginning, it is alright. If not, the program cannot detect it. I would like to make some response for the joystick button. Could you give me more suggestion? (Sorry for making trouble to you!;P Thank you for your help!:-D)

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                      • L LaHaHa

                        I found that the first Poll() get "Invalid". After the Acquire(), the hr is S_OK. Then if I Poll() it again, it will get a S_False. Why? Please help!

                        M Offline
                        M Offline
                        Mark Salsbery
                        wrote on last edited by
                        #36

                        LaHaHa wrote:

                        I would like to make some response for the joystick button. Could you give me more suggestion?

                        In the DirextX SDK see the following sections under DirectInput/Programming Guide/DirectInput Device Data: Polling and Event Notification Joystick Data It's explained there better than I ever could :)

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                        • M Mark Salsbery

                          LaHaHa wrote:

                          I would like to make some response for the joystick button. Could you give me more suggestion?

                          In the DirextX SDK see the following sections under DirectInput/Programming Guide/DirectInput Device Data: Polling and Event Notification Joystick Data It's explained there better than I ever could :)

                          L Offline
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                          LaHaHa
                          wrote on last edited by
                          #37

                          I think my problem is the initialization. My program need to periodically do the initialization of joystick. Could you give me more suggestions? Please help!

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