Re: DateTimePicker Background Color in Vista

Thanks, I was hoping there was a workaround to make it work in both XP and Vista but I may just have to start playing with the messages in WndProc and see what I can get to work.

Nicolas Cadilhac/VisualHint - thank you for the suggestion, I will certainly take a look at it.

Thanks,

Bob Dankert

"Linda Liu[MSFT]" <v-lliu@xxxxxxxxxxxxxxxxxxxx> wrote in message news:8ZDNDuIEIHA.5712@xxxxxxxxxxxxxxxxxxxxxxxxx
Hi Bob,

I performed some tests on this issue and did reproduce the problem. The
BackColor property of the DateTimePicker control doesn't work on either
Windows XP or Vista. The workaround provided in the link you mentioned
fixes this problem on Windows XP but not on Vista.

I looked up this issue in our internal database and found that this is a
known bug about the DateTimePicker control. The Windows Forms
DateTimePicker is a wrapper on a DateTimePicker provided by the Windows OS
(that ships with Windows) and the underlying control does not support
directly changing the edit box fore color and back color.

About the workaround to solve this bug, it's the Vista theme that makes the
workaround which works on Windows XP fail. If you disable the visual styles
for the application, you should see that the above workaround works on
Windows Vista.

So a solution to solve this bug on Vista is to disable the visual styles
for the application and apply the above workaround.

If you're using C#, you could comment out the line of code
'Application.EnableVisualStyles();' in the static Main method to disable
the visual styles for the application.

If you're using VB.NET, you could clear the checkbox before the 'Enable XP
visual styles' option in the Application tab within the project designer.

Hope this helps.
If you have any concern, please feel free to let me know.

Sincerely,
Linda Liu
Microsoft Online Community Support

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