how to make tauri app window have rounded corners with window vibrancy

Question

I'm trying to make calculator with tauri but the problem with window vibrancy having square corners.

I tried to change hRgnBlur argument and also I came across this post but couldn't do it in rust. I tried CreateRoundRectRgn and SetWindowRgn but got big white borders around the window

let hdc: HDC = HDC::default();
BeginPath(hdc);
AngleArc(hdc, 0, 0, 20, 0.0, 0.0);
EndPath(hdc);
let bb = DWM_BLURBEHIND {
    dwFlags: 1,
    fEnable: true.into(),
    hRgnBlur: PathToRegion(hdc),
    fTransitionOnMaximized: true.into(),
};
let _ = DwmEnableBlurBehindWindow(hwnd, &bb);

result

Answer 1

Its not supported (DwmEnableBlurBehindWindow) in windows 10 only 7/Vista. I Used both of DwmEnableBlurBehindWindow and SetWindowCompositionAttribute but DwmEnableBlurBehindWindow seemed to not doing the blur. Sadly there is no option to customize the region.