MFC 滑动杆 SetRange（）初始化编译错误
我在OnInitdialog()中初始化滑动杆：
m_slidercolor.SetRange(0,255);
编译错误：error C2228: left of '.SetRange' must have class/struct/union type
error C2228: left of '.SetTicFreq' must have class/struct/union type
[解决办法]
m_slidercolor没有用一个有效的类名在窗口类中声明
[解决办法]
参考MSDN98\SAMPLES\VC98\MFC\GENERAL\CMNCTRL2\SLIDCTRL.CPP ？