CODEWITHSUNDEEP
c++winapimfc
melanie93
melanie93

Reputation: 169

Run process on the same monitor as the parent process

I have an MFC application written in C++ that launches Notepad via ShellExecuteEx(). Assuming both applications are running on a dual monitor system, how do I make sure that Notepad is opened on the same monitor as the main application?

Upvotes: 3

Views: 319

Answers (1)

Adrian Mole
Adrian Mole

Reputation: 51915

You can set the SEE_MASK_HMONITOR bit in the fMask member of the SHELLEXECTUTEINFO structure and specify the handle of the required monitor in the hMonitor member. You can get the monitor handle of your application's main window using the MonitorFromWindow API call.

The following code (or something very like it) should do the trick:

void RunNotepadOnMyMonitor() {
    SHELLEXECUTEINFO sei;
    memset(&sei, 0, sizeof(SHELLEXECUTEINFO));
    sei.cbSize = sizeof(SHELLEXECUTEINFO);
    sei.fMask = SEE_MASK_HMONITOR;
    sei.lpVerb = _T("open");        // Optional in this case: it's the default
    sei.lpFile = _T("notepad.exe");
    sei.lpParameters = nullptr;     // Add name of file to open - if you want!
    sei.nShow = SW_SHOW;
    sei.hMonitor = ::MonitorFromWindow(AfxGetMainWnd()->GetSafeHwnd(), MONITOR_DEFAULTTONEAREST);
    ShellExecuteEx(&sei);
}

Upvotes: 3

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