wndclass.hbrBackground=GetStockObject(WHITE_BRUSH);


在编写一个简单的窗口，给窗口类定义时，这一句出现误错，误错提示如下
E:\VC\pro46\WinAPI.cpp(20) : error C2440: '=' : cannot convert from 'void *' to 'struct HBRUSH__ *'
Conversion from 'void*' to pointer to non-'void' requires an explicit cast
Error executing cl.exe.


请问是什么原因，是不是这句没写对

wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);

明白，谢谢