本文整理汇总了C#中IVwRootBox.PrepareToDraw方法的典型用法代码示例。如果您正苦于以下问题：C# IVwRootBox.PrepareToDraw方法的具体用法？C# IVwRootBox.PrepareToDraw怎么用？C# IVwRootBox.PrepareToDraw使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IVwRootBox的用法示例。
在下文中一共展示了IVwRootBox.PrepareToDraw方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DrawTheRoot
/// <summary>
/// See C++ documentation
/// </summary>
public void DrawTheRoot(IVwRootBox prootb, IntPtr hdc, Rect rcpDraw, uint bkclr,
bool fDrawSel, IVwRootSite pvrs)
{
IVwSynchronizer synchronizer = prootb.Synchronizer;
if (synchronizer != null)
{
try
{
if (synchronizer.IsExpandingLazyItems)
{
return;
}
}
catch (Exception e)
{
Console.WriteLine("call to IsExpandingLazyItems caused exceptionException e ={0}", e);
}
}
IVwGraphicsWin32 qvg = VwGraphicsWin32Class.Create();
Rectangle rcp = rcpDraw;
using (Graphics screen = Graphics.FromHdc(hdc))
using (var memoryBuffer = new MemoryBuffer(rcp.Width, rcp.Height))
{
memoryBuffer.Graphics.FillRectangle(new SolidBrush(ColorUtil.ConvertBGRtoColor(bkclr)), 0, 0,
rcp.Width, rcp.Height);
qvg.Initialize(memoryBuffer.Graphics.GetHdc());
VwPrepDrawResult xpdr = VwPrepDrawResult.kxpdrAdjust;
IVwGraphics qvgDummy = null;
try
{
Rect rcDst, rcSrc;
while (xpdr == VwPrepDrawResult.kxpdrAdjust)
{
pvrs.GetGraphics(prootb, out qvgDummy, out rcSrc, out rcDst);
Rectangle temp = rcDst;
temp.Offset(-rcp.Left, -rcp.Top);
rcDst = temp;
qvg.XUnitsPerInch = qvgDummy.XUnitsPerInch;
qvg.YUnitsPerInch = qvgDummy.YUnitsPerInch;
xpdr = prootb.PrepareToDraw(qvg, rcSrc, rcDst);
pvrs.ReleaseGraphics(prootb, qvgDummy);
qvgDummy = null;
}
if (xpdr != VwPrepDrawResult.kxpdrInvalidate)
{
pvrs.GetGraphics(prootb, out qvgDummy, out rcSrc, out rcDst);
Rectangle temp = rcDst;
temp.Offset(-rcp.Left, -rcp.Top);
rcDst = temp;
qvg.XUnitsPerInch = qvgDummy.XUnitsPerInch;
qvg.YUnitsPerInch = qvgDummy.YUnitsPerInch;
try
{
prootb.DrawRoot(qvg, rcSrc, rcDst, fDrawSel);
}
catch (Exception e)
{
Console.WriteLine("DrawRoot e = {0} qvg = {1} rcSrc = {2} rcDst = {3} fDrawSel = {4}", e, qvg, rcSrc, rcDst, fDrawSel);
}
pvrs.ReleaseGraphics(prootb, qvgDummy);
qvgDummy = null;
}
}
catch (Exception)
{
if (qvgDummy != null)
pvrs.ReleaseGraphics(prootb, qvgDummy);
qvg.ReleaseDC();
throw;
}
if (xpdr != VwPrepDrawResult.kxpdrInvalidate)
{
screen.DrawImageUnscaled(memoryBuffer.Bitmap, rcp.Left, rcp.Top, rcp.Width, rcp.Height);
}
qvg.ReleaseDC();
}
}