How to get the HWND of mfc DialogBox for .Net
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Can you explain it in detail ?
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Can you explain it in detail ?
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I would like to use SetCooperativeLevel function in my mfc dialogbox program. It needs the HWND parameter. How can I get this HWND? Please help!
Doesn't
m_hWndmember ofCDialog(CWndto be precise) serve your purpose ?Prasad Notifier using ATL | Operator new[],delete[][^]
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Doesn't
m_hWndmember ofCDialog(CWndto be precise) serve your purpose ?Prasad Notifier using ATL | Operator new[],delete[][^]
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Before I use it in Visual Studio 6.0 seems to be alright. But in VS .Net, it seems to be not. Please help!
Again, you are not giving complete information. - Give code, which is failing for you. - What error its giving ? It doesn't help you, if not able to make us understand your problem.
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Again, you are not giving complete information. - Give code, which is failing for you. - What error its giving ? It doesn't help you, if not able to make us understand your problem.
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Coding: if( FAILED( hr = g_pJoystick->SetCooperativeLevel(m_hWnd, DISCL_NONEXCLUSIVE |DISCL_BACKGROUND ) ) ) return hr; error C2065: 'm_hWnd' : undeclared identifier Please help!
Can you show you dialog class declaration ? Because, if its Cdialog derived class, then this error should not come.
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Can you show you dialog class declaration ? Because, if its Cdialog derived class, then this error should not come.
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Oh dear. I'm really not able to understand, why you are getting this problem. Now, pass first parameter
thisinstead of m_hWnd. To avoid compile error.Prasad Notifier using ATL | Operator new[],delete[][^]
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Oh dear. I'm really not able to understand, why you are getting this problem. Now, pass first parameter
thisinstead of m_hWnd. To avoid compile error.Prasad Notifier using ATL | Operator new[],delete[][^]
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I change the m_hWnd with this. if( FAILED( hr = g_pJoystick->SetCooperativeLevel(this, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) return error C2673: 'InitDirectInput' : global functions do not have 'this' pointers I got this error! Please help!
Dear,dear.
LaHaHa wrote:
error C2673: 'InitDirectInput' : global functions do not have 'this' pointers
I was insisting on complete information from start of thread. Again , this error indicates that, code you have pasted is of a global function. And obviously you could not use this pointer there. I was assuming this code is used in one of your dialog function. For using it through global function, you need to have instance of dialog class. Which you can pass as first parameter of said function. Otherwise, post code of function body of
InitDirectInput.Prasad Notifier using ATL | Operator new[],delete[][^]
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Dear,dear.
LaHaHa wrote:
error C2673: 'InitDirectInput' : global functions do not have 'this' pointers
I was insisting on complete information from start of thread. Again , this error indicates that, code you have pasted is of a global function. And obviously you could not use this pointer there. I was assuming this code is used in one of your dialog function. For using it through global function, you need to have instance of dialog class. Which you can pass as first parameter of said function. Otherwise, post code of function body of
InitDirectInput.Prasad Notifier using ATL | Operator new[],delete[][^]
In fact that the function code is only like this: 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; return S_OK; } if( FAILED( hr = g_pJoystick->SetDataFormat( &c_dfDIJoystick2 ) ) ) return hr; if( FAILED( hr = g_pJoystick->SetCooperativeLevel(this, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) return hr; So how to solve this problem! Please help!
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In fact that the function code is only like this: 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; return S_OK; } if( FAILED( hr = g_pJoystick->SetDataFormat( &c_dfDIJoystick2 ) ) ) return hr; if( FAILED( hr = g_pJoystick->SetCooperativeLevel(this, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) return hr; So how to solve this problem! Please help!
Come on ! Where is dialog class instance ? If dialog is already invoked then use
AfxGetMainWnd, to get its handle.LaHaHa wrote:
if( FAILED( hr = g_pJoystick->SetCooperativeLevel(this, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) return hr;
g_pJoystick->SetCooperativeLevel(AfxGetMainWnd(), DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) )
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Come on ! Where is dialog class instance ? If dialog is already invoked then use
AfxGetMainWnd, to get its handle.LaHaHa wrote:
if( FAILED( hr = g_pJoystick->SetCooperativeLevel(this, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) ) return hr;
g_pJoystick->SetCooperativeLevel(AfxGetMainWnd(), DISCL_NONEXCLUSIVE | DISCL_BACKGROUND ) ) )
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I got this one now! error C2664: 'IDirectInputDevice8A::SetCooperativeLevel' : cannot convert parameter 1 from 'CWnd *' to 'HWND' Please help!
You can get its handle by type-casting it. like
SetCooperativeLevel((HWND)(AfxGetMainWnd()),..);
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You can get its handle by type-casting it. like
SetCooperativeLevel((HWND)(AfxGetMainWnd()),..);
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I got this one now! error C2664: 'IDirectInputDevice8A::SetCooperativeLevel' : cannot convert parameter 1 from 'CWnd *' to 'HWND' Please help!
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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You can get its handle by type-casting it. like
SetCooperativeLevel((HWND)(AfxGetMainWnd()),..);
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Try
SetCooperativeLevel((HWND)*AfxGetMainWnd(),..);
;)
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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?