Newer WindowsAppSDK adds white border

[LordHolzkopf]

Your project uses WindowsAppSDK Version="1.4.230822000". If I change version to 1.7.250310001 or similiar, a white border appears around the window (I use Windows 11). Any ideas how to remove them without falling back to the older version?

[castorix]

Maybe it is related to this issue : microsoft/microsoft-ui-xaml#9978

[LordHolzkopf]

Thank you! The following solved the problem:

int style = (int)GetWindowLong(hWnd, GWL_STYLE);
style = style & ~(WS_CAPTION | WS_THICKFRAME);
SetWindowLong(hWnd, GWL_STYLE, style);