在文档/视图结构中的视图默认的背景颜色是白色的
我怎样修改视图的背景颜色呢？

SetBkColor
The SetBkColor function sets the current background color to the specified color value, or to the nearest physical color if the device cannot represent the specified color value.

COLORREF SetBkColor(
HDC hdc, // handle to DC
COLORREF crColor // background color value
);
Parameters
hdc
[in] Handle to the device context.
crColor
[in] Specifies the new background color. To make a COLORREF value, use the RGB macro.
Return Values
If the function succeeds, the return value specifies the previous background color as a COLORREF value.

If the function fails, the return value is CLR_INVALID.

Windows NT/2000/XP: To get extended error information, call GetLastError.

Remarks
This function fills the gaps between styled lines drawn using a pen created by the CreatePen function; it does not fill the gaps between styled lines drawn using a pen created by the ExtCreatePen function. The SetBKColor function also sets the background colors for TextOut and ExtTextOut.

If the background mode is OPAQUE, the background color is used to fill gaps between styled lines, gaps between hatched lines in brushes, and character cells. The background color is also used when converting bitmaps from color to monochrome and vice versa.

没有装中文输入法吧

不是啊，我哪有这么高的英语水平啊。这是copy的MSDN上的内容。