今天可真是奇葩,我使用PS_DOT生成畫筆,居然畫出來的是實線。。。百思不得其解 ?????
CPen penDot(PS_DOT, 1,RGB(255,255,255));
dcMem.SelectObject(&penDot);
for(i=1;i<=20;i++)
{
dcMem.MoveTo(int(left+i*Xinter),top);
dcMem.LineTo(int(left+i*Xinter),bottom);
}
//畫縱軸
Yinter=(bottom-top)/20.0;
for(i=0;i<20;i++)
{
dcMem.MoveTo(left,int(top+i*Yinter));
dcMem.LineTo(right,int(top+i*Yinter));
}
後來我將畫筆的顏色換成了黑色,居然就是虛線了,百思不得其解 ?????
CPen penDot(PS_DOT, 1,RGB(0,0,0));
dcMem.SelectObject(&penDot);
for(i=1;i<=20;i++)
{
dcMem.MoveTo(int(left+i*Xinter),top);
dcMem.LineTo(int(left+i*Xinter),bottom);
}
//畫縱軸
Yinter=(bottom-top)/20.0;
for(i=0;i<20;i++)
{
dcMem.MoveTo(left,int(top+i*Yinter));
dcMem.LineTo(right,int(top+i*Yinter));
}
沒找到原因,如果有朋友碰到此類事件或有跡可查,麻煩告知一下,先感謝答疑解惑之恩德 !