关于打印的问题，谢谢！！

[yuxuan1120]

要打印paintbox里面的图片，图片是TBitmap形式的
加了一个TPrintDialog *prd
编写打印程序的时候，只写prd->Execute();语句，打印不出来
还应该要加上什么语句啊？
急！！谢谢！！

[yuxuan1120]

出现一个错误：“cannot assign a TControlCanvas to a TPrinterCanvas”
怎么回事啊？

[phder]

if(prd->Execute())
{
Printer()->BeginDoc();//开始一个打印工作
Printer()->Canvas->Assign=PaintBox1->Canvas;
Printer()->EndDoc()
}

[phder]

Graphics::TBitmap* BufferBmp;
BufferBmp=new Graphics::TBitmap();
BufferBmp->Canvas->Handle=CreateCompatibleDC(Canvas->Handle);
BufferBmp->Width=PaintBox1->Width;
BufferBmp->Height=PaintBox1->Height;
BufferBmp->Canvas->Assign(PaintBox1->Canvas);
Printer()->Canvas-> Draw(0,0,BufferBmp );
delete BufferBmp;