Example #1
0
 public static extern bool UpdateLayeredWindow(
     IntPtr hWnd,
     IntPtr hdcDst,
     [In] ref NativeMethods.Point pptDst,
     [In] ref NativeMethods.Size pSize,
     IntPtr hdcSrc,
     [In] ref NativeMethods.Point pptSrc,
     int crKey,
     [In] ref NativeMethods.BlendFunction pBlend,
     uint dwFlags);
Example #2
0
 private void UpdateLayeredWindowBitmap()
 {
     if (this.surfaceBuffer.IsDisposed || this.terminated)
     {
         return;
     }
     using (Graphics graphics = Graphics.FromHwnd(IntPtr.Zero))
     {
         IntPtr hdc     = graphics.GetHdc();
         IntPtr hgdiobj = NativeMethods.SelectObject(this.surfaceBuffer.DeviceContext, this.surfaceBuffer.Handle);
         NativeMethods.BlendFunction pBlend = new NativeMethods.BlendFunction()
         {
             BlendOp             = 0,
             BlendFlags          = 0,
             SourceConstantAlpha = byte.MaxValue,
             AlphaFormat         = 1
         };
         NativeMethods.Point point = new NativeMethods.Point();
         point.X = this.Left;
         point.Y = this.Top;
         NativeMethods.Point pptDst = point;
         NativeMethods.Size  pSize  = new NativeMethods.Size()
         {
             Width  = this.surfaceBuffer.Width,
             Height = this.surfaceBuffer.Height
         };
         point   = new NativeMethods.Point();
         point.X = 0;
         point.Y = 0;
         NativeMethods.Point pptSrc = point;
         IntPtr handle = IntPtr.Zero;
         try
         {
             if (!this.terminated)
             {
                 if (this.InvokeRequired)
                 {
                     this.Invoke((Action)(() => handle = this.Handle));
                 }
                 else
                 {
                     handle = this.Handle;
                 }
                 NativeMethods.UpdateLayeredWindow(handle, hdc, ref pptDst, ref pSize, this.surfaceBuffer.DeviceContext, ref pptSrc, 0, ref pBlend, 2U);
             }
         }
         catch (ObjectDisposedException ex)
         {
             return;
         }
         NativeMethods.SelectObject(this.surfaceBuffer.DeviceContext, hgdiobj);
         graphics.ReleaseHdc(hdc);
     }
 }
Example #3
0
        private void UpdateLayeredWindowBitmap()
        {
            if (surfaceBuffer.IsDisposed || this.terminated)
            {
                return;
            }

            using (var gScreen = Graphics.FromHwnd(IntPtr.Zero))
            {
                var hScreenDC  = gScreen.GetHdc();
                var hOldBitmap = NativeMethods.SelectObject(surfaceBuffer.DeviceContext, surfaceBuffer.Handle);

                var blend = new NativeMethods.BlendFunction
                {
                    BlendOp             = NativeMethods.AC_SRC_OVER,
                    BlendFlags          = 0,
                    SourceConstantAlpha = 255,
                    AlphaFormat         = NativeMethods.AC_SRC_ALPHA
                };
                var windowPosition = new NativeMethods.Point
                {
                    X = this.Left,
                    Y = this.Top
                };
                var surfaceSize = new NativeMethods.Size
                {
                    Width  = surfaceBuffer.Width,
                    Height = surfaceBuffer.Height
                };
                var surfacePosition = new NativeMethods.Point
                {
                    X = 0,
                    Y = 0
                };

                IntPtr handle = IntPtr.Zero;
                try
                {
                    if (!this.terminated)
                    {
                        if (this.InvokeRequired)
                        {
                            this.Invoke(new Action(() =>
                            {
                                handle = this.Handle;
                            }));
                        }
                        else
                        {
                            handle = this.Handle;
                        }

                        NativeMethods.UpdateLayeredWindow(
                            handle,
                            hScreenDC,
                            ref windowPosition,
                            ref surfaceSize,
                            surfaceBuffer.DeviceContext, //hBitmap,
                            ref surfacePosition,
                            0,
                            ref blend,
                            NativeMethods.ULW_ALPHA);
                    }
                }
                catch (ObjectDisposedException)
                {
                    return;
                }

                NativeMethods.SelectObject(surfaceBuffer.DeviceContext, hOldBitmap);
                gScreen.ReleaseHdc(hScreenDC);
            }
        }
Example #4
0
        private void UpdateLayeredWindowBitmap()
        {
            if (surfaceBuffer.IsDisposed || this.terminated) { return; }

            using (var gScreen = Graphics.FromHwnd(IntPtr.Zero))
            {
                var hScreenDC = gScreen.GetHdc();
                var hOldBitmap = NativeMethods.SelectObject(surfaceBuffer.DeviceContext, surfaceBuffer.Handle);

                var blend = new NativeMethods.BlendFunction
                {
                    BlendOp = NativeMethods.AC_SRC_OVER,
                    BlendFlags = 0,
                    SourceConstantAlpha = 255,
                    AlphaFormat = NativeMethods.AC_SRC_ALPHA
                };
                var windowPosition = new NativeMethods.Point
                {
                    X = this.Left,
                    Y = this.Top
                };
                var surfaceSize = new NativeMethods.Size
                {
                    Width = surfaceBuffer.Width,
                    Height = surfaceBuffer.Height
                };
                var surfacePosition = new NativeMethods.Point
                {
                    X = 0,
                    Y = 0
                };

                IntPtr handle = IntPtr.Zero;
                try
                {
                    if (!this.terminated)
                    {
                        if (this.InvokeRequired)
                        {
                            this.Invoke(new Action(() =>
                            {
                                handle = this.Handle;
                            }));
                        }
                        else
                        {
                            handle = this.Handle;
                        }

                        NativeMethods.UpdateLayeredWindow(
                            handle,
                            hScreenDC,
                            ref windowPosition,
                            ref surfaceSize,
                            surfaceBuffer.DeviceContext, //hBitmap,
                            ref surfacePosition,
                            0,
                            ref blend,
                            NativeMethods.ULW_ALPHA);
                    }
                }
                catch (ObjectDisposedException)
                {
                    return;
                }

                NativeMethods.SelectObject(surfaceBuffer.DeviceContext, hOldBitmap);
                gScreen.ReleaseHdc(hScreenDC);
            }
        }