今天在onDraw里面画了一个网格宽度是200，高度是280，差不多就是A4的尺寸。并标记了坐标

我用GDI+,图片画刷画了一个区域，也是在OnDraw里面画的，结果

具体代码

Graphics graphics(pDC->m_hDC);

graphics.SetpageUnit(Unit::UnitPixel);

Pen pen(Color::Red,2);

Graphicspath path;

PointF pts[]={PointF(0.0f,0.0f),PointF(50.0f,70.0f),PointF(100.0f,200.0f),PointF(100.0f,280.0f),PointF(0,280.0)};

path.AddCurve(pts,6,0,5,0.0f);

path.CloseFigure();

Pen pen1(Color::red);

graphics.DrawPaht(&pen1,&path);

Bimtap mao(_T("3.jgp"));

TextureBrush tBrush(&mao,WrapMode::WrapMModeTile);

graphics.FillPath(&tBrush,&path);

如果不加红色部分，就会打印预览和打印出来的实际尺寸不相符。