public static void DrawDragOutline(Region region)
{
if (region == null)
return;
// Get hold of the DC for the desktop
IntPtr hDC = User32.GetDC(IntPtr.Zero);
// Define the area we are allowed to draw into
IntPtr hRegion = region.GetHrgn(Graphics.FromHdc(hDC));
Gdi32.SelectClipRgn(hDC, hRegion);
Win32.RECT rectBox = new Win32.RECT();
// Get the smallest rectangle that encloses region
Gdi32.GetClipBox(hDC, ref rectBox);
IntPtr brushHandler = GetHalfToneBrush();
// Select brush into the device context
IntPtr oldHandle = Gdi32.SelectObject(hDC, brushHandler);
// Blit to screen using provided pattern brush and invert with existing screen contents
Gdi32.PatBlt(hDC,
rectBox.left,
rectBox.top,
rectBox.right - rectBox.left,
rectBox.bottom - rectBox.top,
(uint)Win32.RasterOperations.PATINVERT);
// Put old handle back again
Gdi32.SelectObject(hDC, oldHandle);
// Reset the clipping region
Gdi32.SelectClipRgn(hDC, IntPtr.Zero);
Gdi32.DeleteObject(hRegion);
// Must remember to release the HDC resource!
User32.ReleaseDC(IntPtr.Zero, hDC);
}
public static void DrawDragFrame(Region region)
{
if (region == null)
{
return;
}
// Get hold of the DC for the desktop
IntPtr hDC = User32.GetDC(IntPtr.Zero);
// Define the area we are allowed to draw into
Gdi32.SelectClipRgn(hDC, region.GetHrgn(Graphics.FromHdc(hDC)));
Win32.RECT rectBox = new Win32.RECT();
// Get the smallest rectangle that encloses region
Gdi32.GetClipBox(hDC, ref rectBox);
IntPtr brushHandler = GetHalfToneBrush();
// Select brush into the device context
IntPtr oldHandle = Gdi32.SelectObject(hDC, brushHandler);
// Blit to screen using provided pattern brush and invert with existing screen contents
Gdi32.PatBlt(hDC,
rectBox.left,
rectBox.top,
rectBox.right - rectBox.left,
rectBox.bottom - rectBox.top,
(uint)Win32.RasterOperations.PATINVERT);
// Put old handle back again
Gdi32.SelectObject(hDC, oldHandle);
// Reset the clipping region
Gdi32.SelectClipRgn(hDC, IntPtr.Zero);
// Must remember to release the HDC resource!
User32.ReleaseDC(IntPtr.Zero, hDC);
}
public static extern int GetClipBox(IntPtr hDC, ref Win32.RECT rectBox);
public static extern IntPtr CreateRectRgnIndirect(ref Win32.RECT rect);
public static extern bool InvalidateRect(IntPtr hWnd, ref RECT rect, bool erase);
public static extern bool DrawFocusRect(IntPtr hWnd, ref RECT rect);
public static extern bool GetWindowRect(IntPtr hWnd, ref RECT rect);
protected override void WndProc(ref Message m)
{
if (m.Msg == (int)Win32.Msgs.WM_NCCALCSIZE)
{
Win32.RECT rect = (Win32.RECT)m.GetLParam(typeof(Win32.RECT));
m_sizeFrame = new Size(rect.right - rect.left, rect.bottom - rect.top);
base.WndProc(ref m);
rect.left += BorderWidth;
rect.right -= BorderWidth;
rect.top += BorderWidth;
rect.bottom -= BorderWidth;
Marshal.StructureToPtr(rect, m.LParam, true);
return;
}
else if (m.Msg == (int)Win32.Msgs.WM_NCPAINT)
{
if (BorderWidth <= 0)
{
return;
}
IntPtr hDC = User32.GetWindowDC(m.HWnd);
Graphics g = Graphics.FromHdc(hDC);
Rectangle rectFrame = new Rectangle(0, 0, m_sizeFrame.Width, m_sizeFrame.Height);
using (Region regionBorder = new Region(rectFrame))
{
regionBorder.Xor(Rectangle.Inflate(rectFrame, -BorderWidth, -BorderWidth));
g.FillRegion(SystemBrushes.ControlDark, regionBorder);
}
User32.ReleaseDC(m.HWnd, hDC);
return;
}
else if (m.Msg == (int)Win32.Msgs.WM_MOUSEACTIVATE)
{
if (!ContentWindow.FlagMouseActivate)
{
ContentWindow.FlagMouseActivate = true;
base.WndProc(ref m);
ContentWindow.FlagMouseActivate = false;
ContentWindow.Activate();
}
else
{
base.WndProc(ref m);
}
return;
}
else if (m.Msg == (int)Win32.Msgs.WM_LBUTTONDBLCLK)
{
base.WndProc(ref m);
HitTestResult hitTestResult = GetHitTest();
if (hitTestResult.HitArea != HitTestArea.Caption)
{
return;
}
if (DockHelper.IsDockStateAutoHide(DockState))
{
DockManager.ActiveAutoHideContent = null;
return;
}
if (DockHelper.IsDockStateDocked(DockState) && ContentWindow.IsDockStateValid(DockState.Float))
{
ContentWindow.VisibleState = DockState.Float;
}
else if (DockState == DockState.Float && ContentWindow.RestoreState != DockState.Unknown &&
ContentWindow.IsDockStateValid(ContentWindow.RestoreState))
{
ContentWindow.VisibleState = ContentWindow.RestoreState;
}
return;
}
base.WndProc(ref m);
return;
}