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Krustys Donuts
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Jan 20, 2010 - 11:21 AM
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Support, In a CExtResizableDialog I am trying to override the default CExtButton behavoir on VK_SPACE message. Specifically, I don’t want the button with the focus to ’press’ when the user hits the space bar. I have overridden PreTranslateMessage in the dialog class. Although I get the desired result, I still get the default behavior. Any suggestions? Gil
BOOL CV11ExtResizableDialog::PreTranslateMessage(MSG* pMsg)
{
{
{
if (pMsg->message == WM_KEYDOWN)bool bShift = (GetAsyncKeyState(VK_SHIFT) & 0x8000) != 0;bool bControl = (GetAsyncKeyState(VK_CONTROL) & 0x8000) != 0;bool bAlt = (GetAsyncKeyState(VK_MENU) & 0x8000) != 0;switch(pMsg->wParam)//If the user has pressed CTRL+Shift+ALT+v
{
CWnd* pWnd = GetParent();
pWnd->SendMessage(WM_USER_CTRL_ALT_SHIFT_V_Pressed);
}
case ’V’:if (bShift && bControl && bAlt)if (pWnd != NULL)break;//If the user has pressed the space bar.
case VK_SPACE:
CWnd* pWnd = GetParent();
{
if (pWnd != NULL)//Let parent determine action.
pWnd->SendMessage(WM_USER_SpaceBarPressed);
//Don’t allow space on this control.
}
}
}
}
}
return TRUE;break;return CExtNCW < CExtResizableDialog >::PreTranslateMessage(pMsg);
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Technical Support
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Jan 20, 2010 - 1:32 PM
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You should handle the WM_KEYDOWN and WM_KEYUP messages with the WPARAM parameter set to the VK_SPACE value in the overridden PreTranslateMessage() virtual method in your CExtButton-derived class. Your PreTranslateMessage() virtual method should not invoke the parent class method for VK_SPACE key.
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