Question

VC中如何获取窗口当前的背景颜色，具体用到什么函数？

Answer 1

GetClassLong(hwnd,GCL_HBRBACKGROUND) 获得背景画刷
GetObject 根据背景画刷获取逻辑画刷
typedef struct tagLOGBRUSH {
UINT lbStyle;
COLORREF lbColor; //这里就是背景颜色
LONG lbHatch;
} LOGBRUSH,

或者用GetClassInfo 根据类名获取其WNDCLASS结构
typedef struct _WNDCLASS {
UINT style;
WNDPROC lpfnWndProc;
int cbClsExtra;
int cbWndExtra;
HINSTANCE hInstance;
HICON hIcon;
HCURSOR hCursor;
HBRUSH hbrBackground; //背景画刷
LPCTSTR lpszMenuName;
LPCTSTR lpszClassName;
} WNDCLASS, *PWNDCLASS;