TC x64 9.50RC1 - Dialog "Background Transfer Manager ...": incorrect rendering when resizing the window

[iteg]

Dialog "Background Transfer Manager ...": incorrect rendering when resizing the window vertically to up or horizontally to left.

[ghisler(Author)]

No problem here. Please provide more details.

[iteg]

Windows 7 x64 SP1.
https://dropmefiles.com/wVfYD

[ghisler(Author)]

There is no movement in the video.
You mean the white border? I cannot reproduce this. I tried with Windows 7 theme, Windows Basic and Windows Classic.

[iteg]

When the window is resized beyond the upper or left border, the window does not receive a redraw event and image collisions are obtained. When the window disappears, I do this Alt + Tab and the window is correctly redrawn.
Windows 7 x64 SP1. Classic theme. Advanced system settings \ Visual Effects \ Adjust for best performance.

Window movement is not visible due to the disabled option in "Visual Effects \ Adjust for best performance" "Show window contents while dragging".

[iteg]

https://dropmefiles.com/MPwjL

[iteg]

The video shows that progressbars and lables ("0%", "?") didn't redraw.

[ghisler(Author)]

Interesting, I can indeed reproduce this error on Windows 7 only - but it's not related to dark mode, it also happens in normal mode when resizing the dialog from the top(!) border. It doesn't happen when resizing it from the bottom border. I will have to add some redraw calls.

[iteg]

Only this one dialog has a problem with resizing. Perhaps the problem is in advanced window styles. Check out the WS_EX_COMPOSITED style. Also compare styles for dialogs without this problem.

[ghisler(Author)]

The problem is that this is a Windows dialog created via the function CreateDialog. All other resizable dialogs are Delphi forms.

[ghisler(Author)]

Please try with RC2, it should be fixed in both 64-bit and 32-bit versions.

[iteg]

Problem solved by TC 9.50RC2.

[ghisler(Author)]

Great, thanks!