Do we still have a limit of 255 controls per dialog?

Question

Hello.

I was creating a C++ dialog in the resource editor (Visual Studio 2017). I got a warning that my dialog contains more than 255 controls. Do we still have this limitation in Visual Studio 2017?

Thank you.

Konstantin

Answer 1

Hi, @Parchevsky, Konstantin

I do not have Visual Studio 2017 to test.

But in Visual Studio 2022, I am able to create more than 255 controls.
Please consider using the latest Visual Studio.

Best regards,

Minxin Yu

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Answer 2

It was an old limit of Dialog Box Template, which does not exist anymore.

From old MSDN docs :

"

Windows 95/98/Me:The system can support a maximum of 255 controls per dialog box template. To place more than 255 controls in a dialog box, create the controls in the WM_INITDIALOG message handler rather than placing them in the template.

"

Answer 3

In VS2017 15.9.55 the dialog editor inserted over 255 controls without complaint. There were also no error messages or warnings when building.