VC + + Control external program, send a message to the external program method

Here are two things to consider:

Send side:

Find the corresponding form and find the values of CWnd

Send a message to a form

Example:

cwnd* wnd = FindWindow (NULL, _t (" in the course of selecting a problem) ")    ; if (Wnd = = NULL)    {        AfxMessageBox (_t (" can't find the program! " ));    }     Else     {        :: SendMessage (00);    }

The first sentence is to find the form by using the Findwondow function

:: SendMessage (*wnd, wm_user_loadti, 0, 0);

is used to send messages

Receive message: The same as the general custom message. Later in detail

VC + + Control external program, send a message to the external program method