public void DrawRectangle(WindowsPen pen, int x, int y, int width, int height)
{
Debug.Assert(pen != null, "pen == null");
HandleRef hdc = new HandleRef(dc, dc.Hdc);
if (pen != null)
{
dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
DeviceContextBinaryRasterOperationFlags rasterOp = dc.BinaryRasterOperation;
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
rasterOp = dc.SetRasterOperation(DeviceContextBinaryRasterOperationFlags.CopyPen);
}
Gdi32.SelectObject(hdc, Gdi32.GetStockObject(Gdi32.StockObject.HOLLOW_BRUSH));
// Add 1 to widht and height to create the 'bounding box' (convert from point to size).
IntUnsafeNativeMethods.Rectangle(hdc, x, y, x + width, y + height);
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
dc.SetRasterOperation(rasterOp);
}
}
/// <include file='doc\WindowsGraphics.uex' path='docs/doc[@for="WindowsGraphics.DrawRectangle3"]/*' />
public void DrawRectangle(WindowsPen pen, int x, int y, int width, int height)
{
Debug.Assert(pen != null, "pen == null");
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
if (pen != null)
{
this.dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
DeviceContextBinaryRasterOperationFlags rasterOp = this.dc.BinaryRasterOperation;
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
rasterOp = this.dc.SetRasterOperation(DeviceContextBinaryRasterOperationFlags.CopyPen);
}
IntUnsafeNativeMethods.SelectObject(hdc, new HandleRef(null, IntUnsafeNativeMethods.GetStockObject(IntNativeMethods.HOLLOW_BRUSH)));
// Microsoft
IntUnsafeNativeMethods.Rectangle(hdc, x, y, x + width, y + height);
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
this.dc.SetRasterOperation(rasterOp);
}
}
public void DrawLine(WindowsPen pen, int x1, int y1, int x2, int y2)
{
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
DeviceContextBinaryRasterOperationFlags binaryRasterOperation = this.dc.BinaryRasterOperation;
DeviceContextBackgroundMode backgroundMode = this.dc.BackgroundMode;
if (binaryRasterOperation != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
binaryRasterOperation = this.dc.SetRasterOperation(DeviceContextBinaryRasterOperationFlags.CopyPen);
}
if (backgroundMode != DeviceContextBackgroundMode.Transparent)
{
backgroundMode = this.dc.SetBackgroundMode(DeviceContextBackgroundMode.Transparent);
}
if (pen != null)
{
this.dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
IntNativeMethods.POINT pt = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.MoveToEx(hdc, x1, y1, pt);
IntUnsafeNativeMethods.LineTo(hdc, x2, y2);
if (backgroundMode != DeviceContextBackgroundMode.Transparent)
{
this.dc.SetBackgroundMode(backgroundMode);
}
if (binaryRasterOperation != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
this.dc.SetRasterOperation(binaryRasterOperation);
}
IntUnsafeNativeMethods.MoveToEx(hdc, pt.x, pt.y, null);
}
public void DrawRectangle(WindowsPen pen, int x, int y, int width, int height)
{
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
if (pen != null)
{
this.dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
DeviceContextBinaryRasterOperationFlags binaryRasterOperation = this.dc.BinaryRasterOperation;
if (binaryRasterOperation != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
binaryRasterOperation = this.dc.SetRasterOperation(DeviceContextBinaryRasterOperationFlags.CopyPen);
}
IntUnsafeNativeMethods.SelectObject(hdc, new HandleRef(null, IntUnsafeNativeMethods.GetStockObject(5)));
IntUnsafeNativeMethods.Rectangle(hdc, x, y, x + width, y + height);
if (binaryRasterOperation != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
this.dc.SetRasterOperation(binaryRasterOperation);
}
}
public unsafe void DrawLine(WindowsPen pen, int x1, int y1, int x2, int y2)
{
HandleRef hdc = new HandleRef(dc, dc.Hdc);
DeviceContextBinaryRasterOperationFlags rasterOp = dc.BinaryRasterOperation;
DeviceContextBackgroundMode bckMode = dc.BackgroundMode;
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
rasterOp = dc.SetRasterOperation(DeviceContextBinaryRasterOperationFlags.CopyPen);
}
if (bckMode != DeviceContextBackgroundMode.Transparent)
{
bckMode = dc.SetBackgroundMode(DeviceContextBackgroundMode.Transparent);
}
if (pen != null)
{
dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
Point oldPoint = new Point();
IntUnsafeNativeMethods.MoveToEx(hdc, x1, y1, &oldPoint);
IntUnsafeNativeMethods.LineTo(hdc, x2, y2);
if (bckMode != DeviceContextBackgroundMode.Transparent)
{
dc.SetBackgroundMode(bckMode);
}
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
dc.SetRasterOperation(rasterOp);
}
IntUnsafeNativeMethods.MoveToEx(hdc, oldPoint.X, oldPoint.Y, &oldPoint);
}
/// <devdoc>
/// Sets the DC ROP2 and returns the old value.
/// </devdoc>
public DeviceContextBinaryRasterOperationFlags SetRasterOperation(DeviceContextBinaryRasterOperationFlags rasterOperation)
{
return((DeviceContextBinaryRasterOperationFlags)IntUnsafeNativeMethods.SetROP2(new HandleRef(this, this.Hdc), (int)rasterOperation));
}
public DeviceContextBinaryRasterOperationFlags SetRasterOperation(DeviceContextBinaryRasterOperationFlags rasterOperation)
{
return (DeviceContextBinaryRasterOperationFlags) IntUnsafeNativeMethods.SetROP2(new HandleRef(this, this.Hdc), (int) rasterOperation);
}
