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Problem
How can I handle combo box notifications in a CGXComboBoxWnd derived class?
Cause
Action
This can be done by overriding the OnCommand( ) method.
Example:
| BOOL CMyComboBoxWnd::OnCommand(WPARAM wParam, LPARAM lParam) { #if _MFC_VER <0x0300 |
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| UINT nNotification = HIWORD(lParam); HWND hCtl = (HWND) LOWORD(lParam); |
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| #else | ||||
| UINT nNotification = HIWORD(wParam); HWND hCtl = (HWND) lParam; |
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| #endif | ||||
| if (hCtl == m_hWnd) // is it really this wnd? { |
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| if (nNotification == CBN_SELCHANGE) { |
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| TRACE("Dropdown list changed "); | ||||
| } | ||||
| }
return CGXComboBoxWnd::OnCommand(wParam, lParam); |
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| } | ||||
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