public Size GetPartPreferredSize(Graphics g, Rectangle bounds, ThemeSizeType type)
{
if (this.currentElement == null || this.currentHTheme == IntPtr.Zero)
{
return(Size.Empty);
}
RadHdcWrapper radHdcWrapper = new RadHdcWrapper(g, false);
IntPtr hdc = radHdcWrapper.GetHdc();
NativeMethods.SIZE psz = new NativeMethods.SIZE();
UXTheme.GetThemePartSize(this.currentHTheme, hdc, this.currentElement.Part, this.currentElement.State, IntPtr.Zero, type, psz);
radHdcWrapper.Dispose();
return(new Size(psz.cx, psz.cy));
}
public void PaintCurrentElement(Graphics g, Rectangle bounds)
{
if (this.currentHTheme == IntPtr.Zero)
{
return;
}
RadHdcWrapper radHdcWrapper = new RadHdcWrapper(g, true);
IntPtr hdc = radHdcWrapper.GetHdc();
NativeMethods.RECT rect = new NativeMethods.RECT()
{
left = bounds.Left,
top = bounds.Top
};
rect.bottom = rect.top + bounds.Height;
rect.right = rect.left + bounds.Width;
UXTheme.DrawThemeBackground(this.currentHTheme, hdc, this.currentElement.Part, this.currentElement.State, ref rect, IntPtr.Zero);
radHdcWrapper.Dispose();
}
public IntPtr GetHdc()
{
this.hdc = this.graphics.GetHdc();
this.dcState = RadHdcWrapper.SaveDC(this.hdc);
if (this.useTransform)
{
this.graphicsMode = RadHdcWrapper.SetGraphicsMode(this.hdc, 2);
RadHdcWrapper.GetWorldTransform(this.hdc, ref this.oldTransform);
RadHdcWrapper.ModifyWorldTransform(this.hdc, ref this.transform, 2);
}
if (this.clipRegion != IntPtr.Zero)
{
this.origRegion = RadHdcWrapper.CreateRectRgn(0, 0, 0, 0);
if (RadHdcWrapper.GetClipRgn(this.hdc, this.origRegion) == 1)
{
RadHdcWrapper.CombineRgn(this.clipRegion, this.origRegion, this.clipRegion, 1);
}
RadHdcWrapper.SelectClipRgn(this.hdc, this.clipRegion);
}
return(this.hdc);
}
public void ReleaseHdc()
{
if (this.hdc == IntPtr.Zero)
{
return;
}
RadHdcWrapper.RestoreDC(this.hdc, this.dcState);
if (this.useTransform)
{
RadHdcWrapper.SetGraphicsMode(this.hdc, this.graphicsMode);
RadHdcWrapper.SetWorldTransform(this.hdc, ref this.oldTransform);
}
if (this.clipRegion != IntPtr.Zero)
{
NativeMethods.DeleteObject(new HandleRef((object)null, this.clipRegion));
NativeMethods.DeleteObject(new HandleRef((object)null, this.origRegion));
this.clipRegion = IntPtr.Zero;
this.origRegion = IntPtr.Zero;
}
this.graphics.ReleaseHdc(this.hdc);
this.hdc = IntPtr.Zero;
}
