How to detect UNICODE characters when trapping WM_CHAR messages? - c

Question

So, my window procedure is currently trapping all WM_CHAR messages, it works fine with ASCII characters but when I try something like:
case 'ф':
MessageBox(NULL, TEXT("Ф detected"), TEXT("key"), MB_OK);
it fails for some reason.
What's wrong with my approach and how do I fix this?
EDIT: source-code:
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_CHAR:
switch(wParam)
{
case '3':
MessageBox(NULL, TEXT("'3' was pressed"), TEXT("key detected"), MB_OK);
return 0;
case 'ф':
MessageBox(NULL, TEXT( "ф was pressed"), TEXT("key detected"), MB_OK);
return 0;
default:
return 0;
}
case WM_DESTROY :
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

Answer 1

Non-Unicode characters need to be replace as Unicode characters in switch-case:
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_CHAR:
switch(wParam)
{
case L'3':
MessageBox(NULL, TEXT("'3' was pressed"), TEXT("key detected"), MB_OK);
return 0;
case L'ф':
MessageBox(NULL, TEXT( "ф was pressed"), TEXT("key detected"), MB_OK);
return 0;
default:
return 0;
}
case WM_DESTROY :
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
The values of 'ф' and L'ф' are different. The values of 'ф' and other characters not in the ASCII table are often resolved to '?' (63)