我写的画线函数,可为什么总是提示说:The variable 'pDC' is being used without being defined.(运行时错误)
void CSy5View::drawline(CDC* pDC,int x1, int y1, int x2, int y2)
{
pDC->MoveTo(x1,y1);
pDC->LineTo(x2,y2);
}
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CDC,CClientDC都是什么意思啊???
我写的画线函数,可为什么总是提示说:The variable 'pDC' is being used without being defined.(运行时错误) void CSy5View::drawline(CDC* pDC,int x1, int y1, int x2, int y2) { pDC->MoveTo(x1,y1); pDC->LineTo(x2,y2); }