C#•2y ago

❔ Message box using small Segoe UI/skinny/classic theme for OK button

I am making a simple C# program with MessageBox.Show. When I run it I get a message box with the text in small Segoe UI, it's skinny, and it uses classic theme for OK button. How can I get a message box that's normal sized, long, and uses the user theme for the OK button like in the 2nd screenshot?

10 Replies

reflectronic•2y ago

you need to add an application manifest that declares a dependency on Common Controls v6 something like:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
  <dependency>
    <dependentAssembly>
      <assemblyIdentity
        type="win32"
        name="Microsoft.Windows.Common-Controls"
        version="6.0.0.0"
        publicKeyToken="6595b64144ccf1df"
        language="*"
        processorArchitecture="*"
        />
    </dependentAssembly>
  </dependency>
</assembly>

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
  <dependency>
    <dependentAssembly>
      <assemblyIdentity
        type="win32"
        name="Microsoft.Windows.Common-Controls"
        version="6.0.0.0"
        publicKeyToken="6595b64144ccf1df"
        language="*"
        processorArchitecture="*"
        />
    </dependentAssembly>
  </dependency>
</assembly>

you can add an app manifest to your program from VS and paste that in

alcatel•2y ago

:0 thank u but this only fixes the classic theme part not the small segoe ui/length

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

alcatel•17mo ago

Not resolved :(

Accord•17mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

alcatel•17mo ago

no lol

reflectronic•17mo ago

that is the best you can do with MessageBox

reflectronic•17mo ago

as an alternative, you can use Task Dialog, which has a slightly different appearance

reflectronic•17mo ago

if you are using .NET 5 or later it comes with windows forms:

TaskDialog.ShowDialog(new() 
{ 
    Caption = "shell:games",
    Text = "Windows cannot find 'shell:games'. Make sure you typed the name correctly, and then try again.", 
    Buttons = { TaskDialogButton.OK }, 
    Icon = TaskDialogIcon.Error, 
    AllowCancel = true
});

TaskDialog.ShowDialog(new() 
{ 
    Caption = "shell:games",
    Text = "Windows cannot find 'shell:games'. Make sure you typed the name correctly, and then try again.", 
    Buttons = { TaskDialogButton.OK }, 
    Icon = TaskDialogIcon.Error, 
    AllowCancel = true
});

Accord•17mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Message box using small Segoe UI/skinny/classic theme for OK button