// Rebuild new region from previous one
public static void BuildRegion(IntPtr hWnd)
{
IntPtr hRgnClip = IntPtr.Zero;
Api.RECT rw = new Api.RECT();
Api.GetWindowRect(hWnd, ref rw);
int RgnWidth = rw.right - rw.left, RgnHeight = rw.bottom - rw.top;
// Avoid changing region when iconized !
if (RgnHeight < DockMin)
{
return;
}
if ((LastRgnWidth == RgnWidth) && (LastRgnHeight == RgnHeight))
{
return;
}
IntPtr hRgn = Api.CreateRectRgn(0, 0, 0, 0);
if (hRgn != IntPtr.Zero)
{
if (Api.GetWindowRgn(hWnd, hRgn))
{
hRgnClip = Api.CreateRectRgn(0, 0, RgnWidth, RgnHeight);
if (hRgnClip != IntPtr.Zero)
{
// Top left corner.
int rgnX = 0; int rgnY = 0;
CombineRegion(ref hRgnClip, hRgn, 0, 0, FixCaptionLeft, FixCaptionHeight, rgnX, rgnY);
// Top right corner.
rgnX = -LastRgnWidth + FixCaptionRight; rgnY = 0;
CombineRegion(ref hRgnClip, hRgn, RgnWidth - FixCaptionRight, 0, FixCaptionRight, FixCaptionHeight, rgnX, rgnY);
// Bottom left corner.
rgnX = 0; rgnY = -LastRgnHeight + FixBottomHeight;
CombineRegion(ref hRgnClip, hRgn, 0, RgnHeight - FixBottomHeight, FixCaptionLeft, FixBottomHeight, rgnX, rgnY);
// Bottom right corner.
rgnX = -LastRgnWidth + FixCaptionRight; rgnY = -LastRgnHeight + FixBottomHeight;
CombineRegion(ref hRgnClip, hRgn, RgnWidth - FixCaptionRight, RgnHeight - FixBottomHeight, FixCaptionRight, FixBottomHeight, rgnX, rgnY);
Form.FromHandle(hWnd).BackgroundImage = (Bitmap)SK.DrawBackGround(RgnWidth, RgnHeight);
// Set the new region to the form.
Api.SetWindowRgn(hWnd, hRgnClip, false);
// Save the new region size
LastRgnWidth = RgnWidth; LastRgnHeight = RgnHeight;
}
}
Api.DeleteObject(hRgn);
}
}
private bool CheckOverThumb(int x, int y)
{
Api.RECT r = new Api.RECT();
r.left = BLUE_Thumb.Left;
r.top = BLUE_Thumb.Top;
r.right = r.left + BLUE_Thumb.Width;
r.bottom = r.top + BLUE_Thumb.Height;
Api.POINT p = new Api.POINT();
p.x = x; p.y = y;
return(Api.PtInRect(ref r, p));
}
private bool CheckOverThumb(int x, int y)
{
Api.RECT r = new Api.RECT();
r.left = BLUE_Thumb.Left;
r.top = BLUE_Thumb.Top;
r.right = r.left + BLUE_Thumb.Width;
r.bottom = r.top + BLUE_Thumb.Height;
Api.POINT p = new Api.POINT();
p.x = x; p.y = y;
return (Api.PtInRect(ref r, p));
}