4,397 questions
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No, the Outlook extensibility model doesn't provide anything for that.
As a possible workaround you may consider creating an adjacent Outlook window using Windows API functions (by subclassing Outlook windows).
VSTO Outlook: Change the background color of the title bar and boders of a custom task pane
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R R
6
Reputation points
Is it possible to change the background color of the title bar and borders of a custom task pane?
I am not referring to the background color of the user control embedded.
Microsoft 365 and Office | Development | Other