P
philips
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GUEST, unregistred user!
如题
但下面的语句编译通过，运行出错：
cvs1 = new TCanvas;
cvs1->CopyMode = cmSrcCopy;
cvs->CopyRect(Rect(0,0,784,3000),Image1->Canvas,Rect(0,0,784,3000));
出错信息为 ：Canvas does not allow drawing.
但下面的语句编译通过，运行出错：
cvs1 = new TCanvas;
cvs1->CopyMode = cmSrcCopy;
cvs->CopyRect(Rect(0,0,784,3000),Image1->Canvas,Rect(0,0,784,3000));
出错信息为 ：Canvas does not allow drawing.