How to get the HWND of mfc DialogBox for .Net
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You need to force it to use the overloaded (HWND) casting operator... For the main window's HWND: g_pJoystick->SetCooperativeLevel(*AfxGetMainWnd(), DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) For the window's HWND (if this is called within a CWnd-derived class): g_pJoystick->SetCooperativeLevel(*this, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) Note the asterisks dereferencing the CWnd pointers. You can also use this: g_pJoystick->SetCooperativeLevel(AfxGetMainWnd()->GetSafeHwnd(), DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) or g_pJoystick->SetCooperativeLevel(GetSafeHwnd(), DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) )
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I have tried all, the result are *this and GetSafeHwnd() will get error *AfxGetMainWnd() AfxGetMainWnd()->GetSafeHwnd() both without error, but it will get a E_HANDLE after running the SetCooperativeLevel(...). Please help!
I looked back through all your posts and I didn't see where you are making the call from. Can you post the entire function that includes the call to SetCooperativeLevel()?
LaHaHa wrote:
I have tried all, the result are *this and GetSafeHwnd() will get error
Are you getting compiler error or runtime error?
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I looked back through all your posts and I didn't see where you are making the call from. Can you post the entire function that includes the call to SetCooperativeLevel()?
LaHaHa wrote:
I have tried all, the result are *this and GetSafeHwnd() will get error
Are you getting compiler error or runtime error?
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!
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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!
Thanks that helps! I would pass the HWND into your InitDirectInput() function.
Void CT1Dlg::OnTimer(UINT nIDEvent)
{
...
if(!FAILED(InitDirectInput(*this)))
{
...
}
...
}HRESULT InitDirectInput(HWND hwndMain)
{
...
if( FAILED( hr = g_pJoystick->SetCooperativeLevel(hwndMain, DISCL_NONEXCLUSIVE |
DISCL_BACKGROUND ) ) )
return hr;
...
}If your dialog window is wrapped in (a client of) a frame window then you'd need to pass that framewnd's handle. I'm not sure what you're doing overall, but are you sure you want to initialize in response to a timer event? Generally DirectX initializations are done once, you use the functionality, and cleanup when you're done. Mark
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Thanks that helps! I would pass the HWND into your InitDirectInput() function.
Void CT1Dlg::OnTimer(UINT nIDEvent)
{
...
if(!FAILED(InitDirectInput(*this)))
{
...
}
...
}HRESULT InitDirectInput(HWND hwndMain)
{
...
if( FAILED( hr = g_pJoystick->SetCooperativeLevel(hwndMain, DISCL_NONEXCLUSIVE |
DISCL_BACKGROUND ) ) )
return hr;
...
}If your dialog window is wrapped in (a client of) a frame window then you'd need to pass that framewnd's handle. I'm not sure what you're doing overall, but are you sure you want to initialize in response to a timer event? Generally DirectX initializations are done once, you use the functionality, and cleanup when you're done. Mark
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If you put a breakpoint at the SetCooperativeLevel() call, what's the value of the window handle?
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Also, what are the properties of your dialog resource? Try setting the dialog's "Overlapped Window" property to true.
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Also, what are the properties of your dialog resource? Try setting the dialog's "Overlapped Window" property to true.
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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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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.
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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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!
I don't see anything except GetDeviceState() can return DIERR_INPUTLOST but Acquire() doesn't.
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I don't see anything except GetDeviceState() can return DIERR_INPUTLOST but Acquire() doesn't.
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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!
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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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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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!
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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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:
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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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!
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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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 :)