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Fixed an issue in KryptonForm where a white title bar area was still rendered when ControlBox was set to false and the form Text was empty. The form now correctly hides the non-client title area when no caption or control buttons are present, ensuring consistent visual behavior. #2914
mcpbcs
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area:toolkit
mcpbcs
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PWagner1
approved these changes
Apr 11, 2026
Add a protected internal virtual HasFormFrames() API to VisualForm with a concrete KryptonForm implementation. The KryptonForm override correctly evaluates FormBorderStyle and caption content (Text / TextExtra), which fixes the white bar rendered in the non-client area when a sizeable form loses focus with an empty caption. This change avoids duplicated logic and provides a reusable contract for non-client chrome handling.
Adjust KryptonForm.HasCaptionContent to consider ControlBox state when determining caption usability. This prevents treating certain ControlBox=false configurations as usable captions, avoiding non-client repaint artifacts such as the white bar when the form loses focus.
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Fixed an issue in KryptonForm where a white title bar area was still rendered
when ControlBox was set to false and the form Text was empty.
The form now correctly hides the non-client title area when no caption
or control buttons are present, ensuring consistent visual behavior.
#2914