pBitmapData和pBitmapInfo怎么声明和使用？是CDIB类里面的东西吗？

[lfeidoom3]

看网上一个把位图向上平移的代码、里面的pBitmapData和pBitmapInfo看不懂，是怎么声明和使用的呢？是CDIB类里面的东西吗？
for(int i=0;i <=bitmapHeight;i++)
{
for(int j=0;j <=bitmapHeight;j=j+8)
{
::StretchDIBits(pDC->GetSafeHdc(),j,bitmipHeight-i,8,i,j,bitmapHeight-1,8,i,pBitmapData,pBitmapInfo,DIB_RGB_COLORS,SRCCOPY);
}
}

[cnzdgs]

鼠标又击这两个变量，选择“转到定义”等。

[fandh]

晕，楼主的问题问的不是很地道！
很明显，这是一个位图一些东西！

[oyljerry]

看它参数说明

WINGDIAPI BOOL WINAPI StretchDIBits(
HDC hdc,
int XDest,
int YDest,
int nDestWidth,
int nDestHeight,
int XSrc,
int YSrc,
int nSrcWidth,
int nSrcHeight,
CONST VOID* lpBits,
CONST BITMAPINFO* lpBitsInfo,
UINT iUsage,
DWORD dwRop
);


Parameters

hdc
[in] Handle to the destination device context.
XDest
[in] Integer that specifies the x-coordinate, in logical units, of the upper left corner of the destination rectangle.
YDest
[in] Integer that specifies the y-coordinate, in logical units, of the upper left corner of the destination rectangle.
nDestWidth
[in] Integer that specifies the width, in logical units, of the destination rectangle.
nDestHeight
[in] Integer that specifies the height, in logical units, of the destination rectangle.
XSrc
[in] Integer that specifies the x-coordinate, in pixels, of the origin of the source rectangle in the DIB.
YSrc
[in] Integer that specifies the y-coordinate, in pixels, of the origin of the source rectangle in the DIB.
nSrcWidth
[in] Integer that specifies the width, in pixels, of the source rectangle in the DIB.
nSrcHeight
[in] Integer that specifies the height, in pixels, of the source rectangle in the DIB.
lpBits
[in] Pointer to the DIB bits, which are stored as an array of bytes.
lpBitsInfo
[in] Pointer to a BITMAPINFO structure that contains information about the DIB.
iUsage
[in] Unsigned integer that specifies whether you provided a value for the bmiColors member of the BITMAPINFO structure, and, if so, whether bmiColors contains explicit red, green, blue (RGB) values or indexes.

The following table shows the possible values.
Value Description
DIB_PAL_COLORS The array contains 16-bit indexes into the logical palette of the source device context.
DIB_RGB_COLORS The color table contains literal red, green, and blue values.
dwRop
[in] DWORD that specifies how to combine the source pixels, the current brush of the destination device context, and the destination pixels to form the new image.

[闪破风浪]

程序怎么可以断章取义呢？？？
可以自己跟踪进去看看～