3,970 questions
wm_syscommand not detected
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genush
61
Reputation points
I have two MFC SDI applications, call them A and B. B is derived from A (B is A plus more). I put a handler for the WM_SYSCOMMAND message in CMainFrame of A and it works fine. I put the same handler in B and the OnSysCommand handler in CMainFrame never gets entered. This doesn't seem possible, and I can't think of any reason why that would be. Any ideas greatly appreciated.
Developer technologies C++
Developer technologies Visual Studio Other
5,450 questions
{count} votes
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Viorel 122.5K Reputation points2022-02-18T19:23:44.167+00:00 Show what is put in A and in B related to WM_SYSCOMMAND and OnSysCommand.
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RLWA32 49,461 Reputation points2022-02-18T21:22:06.237+00:00 Did you remember to make the ON_WM_SYSCOMMAND() entry in B's message map in addition to copying the handler function?
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(201.6, 57.00000000000001%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMY%3C/text%3E%3C/svg%3E)
Minxin Yu 13,501 Reputation points Microsoft External Staff2022-02-22T02:08:19.203+00:00 May I know if your problem has been solved? Providing the necessary code will help us reproduce and solve the problem.
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