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 static bool SetViewportOrgEx(HandleRef hDC, int x, int y, [In, Out] IntNativeMethods.POINT point)
{
return(IntSetViewportOrgEx(hDC, x, y, point));
}
public static bool OffsetViewportOrgEx(HandleRef hDC, int nXOffset, int nYOffset, [In, Out] IntNativeMethods.POINT point)
{
return(IntOffsetViewportOrgEx(hDC, nXOffset, nYOffset, point));
}
public static bool MoveToEx(HandleRef hdc, int x, int y, IntNativeMethods.POINT pt)
{
return(IntMoveToEx(hdc, x, y, pt));
}
public static extern bool IntSetViewportOrgEx(HandleRef hDC, int x, int y, [In, Out] IntNativeMethods.POINT point);
public static extern bool IntOffsetViewportOrgEx(HandleRef hDC, int nXOffset, int nYOffset, [In, Out] IntNativeMethods.POINT point);
public static extern bool IntMoveToEx(HandleRef hdc, int x, int y, IntNativeMethods.POINT pt);
public static extern bool IntGetViewportOrgEx(HandleRef hdc, [In, Out] IntNativeMethods.POINT lpPoint);
public static bool GetViewportOrgEx(HandleRef hdc, [In, Out] IntNativeMethods.POINT lpPoint)
{
return(IntGetViewportOrgEx(hdc, lpPoint));
}
public void TranslateTransform(int dx, int dy)
{
IntNativeMethods.POINT point = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.OffsetViewportOrgEx(new HandleRef(this, this.Hdc), dx, dy, point);
}
public Point SetViewportOrigin(Point newOrigin)
{
IntNativeMethods.POINT point = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.SetViewportOrgEx(new HandleRef(this, this.Hdc), newOrigin.X, newOrigin.Y, point);
return(point.ToPoint());
}
