public static void SetTitleBarTheme(IntPtr handle, bool isDarkMode)
{
if (IsWindows10OrGreater(17763))
{
int attr = WindowNative.DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1;
if (IsWindows10OrGreater(18985))
{
attr = WindowNative.DWMWA_USE_IMMERSIVE_DARK_MODE;
}
int value = isDarkMode ? 1 : 0;
WindowNative.DwmSetWindowAttribute(handle, attr, ref value, sizeof(int));
}
}
public static void SetFormShadow(IntPtr handle, int margin = 1)
{
int attr = 2;
int value = 2;
WindowNative.DwmSetWindowAttribute(handle, attr, ref value, sizeof(int));
var margins = new WindowNative.Margins()
{
bottomHeight = margin,
leftWidth = margin,
rightWidth = margin,
topHeight = margin,
};
WindowNative.DwmExtendFrameIntoClientArea(handle, ref margins);
}