Crash on syscommand mfc C++

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C++

void CCReadLogDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
	  CDialogEx::OnSysCommand(nID, lParam);
	}

}

What I have tried:

I have a crash when I exit from fuction, but I don't understand why

Posted 4-Oct-24 5:50am

Member 14594285

Updated 4-Oct-24 21:19pm

KarstenK

v2

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Comments

jeron1 4-Oct-24 12:33pm

If you were to step through it in debug mode, do you see the offending line that causes the crash?

Rick York 4-Oct-24 15:53pm

Put some TRACE statements in the code and figure it out. There is nothing obviously wrong with that code as it is so you have to take some steps to diagnose the problem.

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KarstenK · Answer 1 · 2024-10-04T21:20:00

Solution 2

A common issue is, that you arent in the main thread or called the function from a dll. Use the debugger to find the details out.

Posted 4-Oct-24 21:20pm

KarstenK