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Thank you Rufeng, I changed the program a little bit.
Now I want to send a message to the main form when the child window is closed, delete the subform pointer and assign NULL
Here is the added message map
BEGIN_MESSAGE_MAP
MESSAGE_HANDLER (WM_FORM_CLOSE, TMessage, CMMessage)
END_MESSAGE_MAP (TForm1)
Custom message, the program runs together hereEND_MESSAGE_MAP (TForm1) Here is the stack overflow, why is this? |
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