Procedure for a VC window to send messages to other windows

In a project, the subwindow needs to upload different status information to other windows for different display.
The main implementation process is:

1. Set the window handle of other windows to global and assign values during initialization;
Hwnd hmainwnd;
Hmainwnd = This-> getsafehwnd ();

2. customize messages and add response functions in other windows;
Add in resource. h
# Define wm_mymessage (wm_user+ 100)

Class
Afx_msg void onmymessage (wparam, lparam); Function and Its Implementation

Add a message to the Message ing to correspond to the message processing function.
Begin_message_map (cwebdlgdlg, cdialog)
// {Afx_msg_map (cwebdlgdlg)
On_message (wm_mymessage, mymessage)
//} Afx_msg_map
End_message_map ()

3. Send messages in the subwindow

: Sendmessage (hmainwnd, wm_mymessage, 10l, 5l );