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【单选题】
使用GetWindowDC()和GetDC( )获取的设备上下文在退出时,必须调用( )释放设备上下文。A.
DeleteDC()
B.
delete( )
C.
ReleaseDC( )
D.
Detach()
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举一反三
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【单选题】有函数声明如下: void fun(int a=1,int b=5); 以下调用不正确的是:
A.
fun(3,4);
B.
fun(5);
C.
fun(5,3,1);
D.
fun();
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