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ElectroFusion
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 Posted: Sun Jun 22, 2008 12:37 pm Post subject: [C++]WM_DESTROY |
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I keep trying WM_DESTROY and its not working... my syntax:
. . .
void destroy(HWND hWnd){
WM_DESTROY(HWND hWnd);
}
. . .
if(GetAsyncKeyState(VK_F12){
destroy();
}
. . .
Why isn't it working?
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bera
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atom0s
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| Posted: Sun Jun 22, 2008 12:44 pm Post subject: |
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WM_DESTROY is a window message, not a function.
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ElectroFusion
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| Posted: Sun Jun 22, 2008 12:49 pm Post subject: |
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EDIT: NVM fixed.
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| ghostonline wrote: |
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bera
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HomerSexual
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| Posted: Sun Jun 22, 2008 1:26 pm Post subject: |
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WM_DESTROY(HWND hWnd);
Even if that was a function you don't CALL a function like that. You would call it just
Function(hWnd);
When you declare a function you do (TYPE varname)
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hcavolsdsadgadsg
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| Posted: Sun Jun 22, 2008 4:13 pm Post subject: |
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| It's a windows message, use Post/SendMessage... though you really shouldn't be throwing WM_DESTROY's around.
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nwongfeiying
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| Posted: Sun Jun 22, 2008 11:06 pm Post subject: |
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I'm just wondering and correct me if I'm wrong, but because you declared the function as
| Code: |
void WM_DESTORY (HWND hWnd);
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it should be
| Code: |
. . .
if ( GetAsyncKeyState ( VK_F12 ) [b])[/b] {
destroy( your_hWnd_here );
}
. . .
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atom0s
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| Posted: Sun Jun 22, 2008 11:19 pm Post subject: |
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| nwongfeiying wrote: | I'm just wondering and correct me if I'm wrong, but because you declared the function as
| Code: |
void WM_DESTORY (HWND hWnd);
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it should be
| Code: |
. . .
if ( GetAsyncKeyState ( VK_F12 ) [b])[/b] {
destroy( your_hWnd_here );
}
. . .
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Again, WM_DESTORY is not a function, it is a window message that is handled by a windows message pump. It is a raised event when the window is being told to destroy itself. (Called when DestroyWindow() is called on the given hWnd.)
If you want to achieve the effect of what you are attempting to do, just use DestroyWindow. In the case of what is posted here:
| Code: | if( GetAsyncKeyState( VK_F12 ) ){
DestroyWindow( hWnd );
} |
More info if you need it:
WM_DESTROY message:
http://msdn.microsoft.com/en-us/library/ms632620(VS.85).aspx
DestroyWindow API:
http://msdn.microsoft.com/en-us/library/ms632682(VS.85).aspx
Creating and Destroying windows:
http://msdn.microsoft.com/en-us/library/ms632598(VS.85).aspx
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avril18
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| Posted: Tue Jun 24, 2008 12:01 pm Post subject: |
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i will go offtopic with this question but
i always get an error when trying to use GetAsyncKeyState
i dont know if this problem is because im using vs 2005
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samuri25404
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| Posted: Tue Jun 24, 2008 5:23 pm Post subject: |
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| avril18 wrote: | i will go offtopic with this question but
i always get an error when trying to use GetAsyncKeyState
i dont know if this problem is because im using vs 2005 |
You probably declared the import wrong.
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hcavolsdsadgadsg
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| Posted: Tue Jun 24, 2008 10:20 pm Post subject: |
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| avril18 wrote: | i will go offtopic with this question but
i always get an error when trying to use GetAsyncKeyState
i dont know if this problem is because im using vs 2005 |
How about you post the damn error so we have a clue?
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avril18
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| Posted: Wed Jun 25, 2008 5:15 pm Post subject: |
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if i put:
if ( GetAsyncKeyState ( VK_F12 ))
Windows::Forms::MessageBox::Show("hello;)","grats!!");
else
Windows::Forms::MessageBox::Show(" ","Error");
i get an error saying:
error C2065: 'VK_F12' : undeclare identifier
error C3861: 'GetAsyncKeyState': identifier not found
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samuri25404
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| Posted: Wed Jun 25, 2008 5:27 pm Post subject: |
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| avril18 wrote: | if i put:
if ( GetAsyncKeyState ( VK_F12 ))
Windows::Forms::MessageBox::Show("hello;)","grats!!");
else
Windows::Forms::MessageBox::Show(":( ","Error");
i get an error saying:
error C2065: 'VK_F12' : undeclare identifier
error C3861: 'GetAsyncKeyState': identifier not found |
Include the right header?
Though you're using managed C++, so you'll probably have to declare the imports. Look up "P/Invoke C++.NET on Google" or something of the likes.
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hcavolsdsadgadsg
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| Posted: Wed Jun 25, 2008 8:05 pm Post subject: |
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| avril18 wrote: | if i put:
if ( GetAsyncKeyState ( VK_F12 ))
Windows::Forms::MessageBox::Show("hello;)","grats!!");
else
Windows::Forms::MessageBox::Show(" ","Error");
i get an error saying:
error C2065: 'VK_F12' : undeclare identifier
error C3861: 'GetAsyncKeyState': identifier not found |
include windows.h
| samuri25404 wrote: | | avril18 wrote: | if i put:
if ( GetAsyncKeyState ( VK_F12 ))
Windows::Forms::MessageBox::Show("hello;)","grats!!");
else
Windows::Forms::MessageBox::Show(" ","Error");
i get an error saying:
error C2065: 'VK_F12' : undeclare identifier
error C3861: 'GetAsyncKeyState': identifier not found |
Include the right header?
Though you're using managed C++, so you'll probably have to declare the imports. Look up "P/Invoke C++.NET on Google" or something of the likes. |
You dont't need to Pinvoke under managed C++ if I remember right.
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nwongfeiying
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| Posted: Wed Jun 25, 2008 10:32 pm Post subject: |
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| Ain't Visual C++ just great?
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hcavolsdsadgadsg
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| Posted: Thu Jun 26, 2008 12:55 am Post subject: |
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| nwongfeiying wrote: | | Ain't Visual C++ just great? |
being sarcastic towards something that isn't the source of the problem is pretty awesome.
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