C ++ dynamically creates button and button message response, and button message

C ++ dynamically creates button and button message response, and button message

Dynamically created buttons are processed in the message OnCommand.

1 \ create button

CButton * btn = new CButton (); btn-> Create (_ T ("method"), WS_CHILD | WS_VISIBLE, CRect (0, 50, 50), this, 2 );

Note that the last parameter is created.

This data indicates the ID value of the created control, which is equivalent

This data is the only important sign of the control.

BOOL CMyCusCrl: OnCommand (WPARAM wParam, LPARAM lParam) {// TODO: Add dedicated code and/or call the base class if (wParam = 2) {AfxMessageBox (_ T ("dsaljkgasg");} return CWnd: OnCommand (wParam, lParam );}

Here we use 2, and here 2 is the ID number created above

We can judge in the wParam parameter to see which button is pressed.