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分享COMBOX响应KEY_DOWN消息
我想在列表展开时,
按下Delete键,可以响应一个消息,
以便我删除当前处于选中状态的项.
MFC里面没有直接提供这样的消息.
请问有人知道怎么做吗?
按下Delete键,可以响应一个消息,
以便我删除当前处于选中状态的项.
MFC里面没有直接提供这样的消息.
请问有人知道怎么做吗?
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yjgx007 2007-02-07
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Typically, Hooking list-box within the combobox.
1. Get handle - hListbox to list-box in CComboBox::OnCtlColor
then defines/set a callback function as new window proc for the list-box
LRESULT CALLBACK MyListboxProc(HWND hwnd, UINT message, WPARAM wp, LPARAM lp);
WNDPROC pOldListboxProc = (WNDPROC)SetWindowLong(hListbox, GWL_WNDPROC, (LONG)MyLitboxProc);
3. In MyListboxProc, intercepting message WM_KEYDOWN and process what you want to do
4. Remember to recover the pOldListboxProc when there is no long time to process above.(e.g, the combobox is being destorying);
1. Get handle - hListbox to list-box in CComboBox::OnCtlColor
then defines/set a callback function as new window proc for the list-box
LRESULT CALLBACK MyListboxProc(HWND hwnd, UINT message, WPARAM wp, LPARAM lp);
WNDPROC pOldListboxProc = (WNDPROC)SetWindowLong(hListbox, GWL_WNDPROC, (LONG)MyLitboxProc);
3. In MyListboxProc, intercepting message WM_KEYDOWN and process what you want to do
4. Remember to recover the pOldListboxProc when there is no long time to process above.(e.g, the combobox is being destorying);
