Window Decorations: Enable/Disable

[HTGAzureX1212]

Context

I am currently trying to create a window with no decorations (and specifically without the title bar as well).

Problem description & Solution

Prior art: issue #337 describes how the .borderless() method could be used to disable borders of a window (which does not include the title bar on Windows). As a result, the title bar is not removed and does not satisfy my current needs.

A proposed API to implement this is probably a .window_decorations() method on the Window structure which takes in an IntoPropertySource<bool> or something or maybe some bikeshedding on the method name...?.

Or, maybe extend the .borderless() function to take into consideration for removing the title bar as well for Windows.

[Cy6er7um]

In traditional WinForm programs, the C++ code can be used to hide the title bar.

SetWindowLong(hWnd, GWL_STYLE, GetWindowLong(hWnd, GWL_STYLE) & ~WS_CAPTION);