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Editorial Team
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Asked: 2026-05-26T01:28:04+00:00

I have a CDialog based application. In the Visual Studio resource editor the properties

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I have a CDialog based application. In the Visual Studio resource editor the properties for my dialog show the style is set to “Popup” and the System Menu value is “True”. However when I run my application there is no system menu; how can I get a system menu to show? Do I need to set an icon first with SetIcon()?

Here is the definition of my dialog from the resource file:

IDD_MAIN_DIALOG DIALOGEX 0, 0, 637, 371
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | WS_POPUP | WS_VISIBLE
| WS_CAPTION | WS_SYSMENU
EXSTYLE WS_EX_CONTROLPARENT
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1 Answer

  1. Editorial Team

    Apparently it seems you need an icon to display the system menu. I added an icon resource to my project and then called the following in my OnInitDialog() method:

    SetIcon(AfxGetApp()->LoadIcon(IDI_APP_ICON), TRUE);

    Now my app has an icon and when I left click on it, it shows the system menu.

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