The synthesis of image and text

A few days ago to do a program, the text and bitmap image synthesis and save as a bitmap file. But asked for a long time no one to give a satisfactory answer, had to grope in the dark, took some effort to achieve the image and text synthesis, and can drag the mouse text. Now I post the code, hoping to give help to the friend I need.

One, the key function 1.

int SetDIBits(
　　　　HDC hdc,　　　　　　　　　// 兼容DC的句柄
　　　　HBITMAP hbmp,　　　　　　 // 兼容位图的句柄
　　　　UINT uStartScan,　　　　　// 扫描起始行的编号
　　　　UINT cScanLines,　　　　　// 扫描的行的数目
　　　　CONST VOID *lpvBits,　　　// 位图缓冲区的指针，要求已经分配空间
　　　　CONST BITMAPINFO *lpbmi,　// 位图信息
　　　　UINT fuColorUse　　　　　 // 颜色格式
　　　 );

This function pastes bitmap data one pixel pixel to a compatible bitmap, HDC is a compatible DC with a compatible bitmap selected.

2.

int GetDIBits(
　　　　　HDC hdc,　　　　　 // 兼容DC的句柄
　　　　　HBITMAP hbmp,　　　// 兼容位图的句柄
　　　　　UINT uStartScan,　 // 扫描起始行的编号
　　　　　UINT cScanLines,　 // 扫描的行的数目
　　　　　LPVOID lpvBits,　　// 位图缓冲区的指针，要求已经分配空间
　　　　　LPBITMAPINFO lpbi, // 位图信息
　　　　　UINT uUsage　　　　// 颜色格式
　　　　 );

This function, in contrast to setdibits, copies the existing data in a compatible bitmap to the data buffer (lpvbits) in pixels of one pixel. So the implementation of the program is more clear, first, according to the size of the bitmap, create a compatible bitmap, and then draw the picture to a compatible bitmap, and then write the text to a compatible bitmap, and then from the compatible bitmap to get the synthesized data.