从一个.bmp文件中读取数据(包括BITMAPINFOHEADER，调色板和实际图象数据)，将其存储在一个全局内存句柄hImgData中，这个hImgData将在以后的图象处理程序中用到。同时填写一个类型为HBITMAP的全局变量hBitmap和一个类型为HPALETTE的全局变量hPalette。这两个变量将在处理WM_PAINT消息时用到，用来显示位图。该函数的两个参数分别是用来显示位图的窗口句柄，和.bmp文件名(全路径)。当函数成功时，返回TRUE，否则返回FALSE。-From a. Bmp file to read data (including BITMAPINFOHEADER, palette and the actual image data), store it in a global memory handle hImgData, this hImgData in later image processing procedures used. Also fill in a global variable of type HBITMAP hBitmap and a global variable of type HPALETTE hPalette. These two variables will be used when handling the WM_PAINT message, used to display bitmap. The function of the two parameters are used to display the bitmap window handle, and a. Bmp file name (full path). When the function is successful, returns TRUE, otherwise returns FALSE.