在图片上画线出现错误 求助！

[zj282584937]

在Image中画线，我用Image1->Canvas->MoveTo，Image1->Canvas->LineTo方法，提示出错“can only modify an image if it contains a bitmap”
求助 究竟该怎么画线啊？谢谢啦

[cczlp]

Image中要么不包含图片, 要么只包含bmp图片.

[i_love_pc]

不要直接加载bitmap，采用画图的方式，先画图，再画线
Graphics::TBitmap *BrushBmp = new Graphics::TBitmap;
BrushBmp->LoadFromFile("E:\\1.bmp");
Image1->Canvas->Brush->Bitmap = BrushBmp;
Image1->Canvas->FillRect(Rect(0,0,Image1->Width,Image1->Height));
Image1->Canvas->Brush->Style=bsClear;
Image1->Canvas->Pen->Color=clRed;
Image1->Canvas->MoveTo(10,10);
Image1->Canvas->LineTo(100,100);
delete BrushBmp;