用 文件系统把bmp图片从SD卡中读取出来显示黑边 的原因是什么？

我使用 文件系统把 bmp 图片 （ARPG 的）从SD卡中读取出来，然后显示，绘制出来的图片有黑边
同一张图片 使用 BmpCvt 转换成 C 文件，放到代码里显示就没有黑边，怎么解决
[C] 纯文本查看 复制代码
LCD_Show_Picture_SD("1:/SYSTEM/APP/APPS/ICOS/app03_48.bmp",0,30,30,1,1);GUI_DrawBitmap(&bmapp03_48,88,88);void LCD_Show_Picture_SD(const char *sFilename,u8 type,u16 x,u16 y,u16 Num,u16 Denom){int XSize,YSize;GUI_HMEM hMem;int i;GUI_JPEG_INFO JpegInfo;GUI_GIF_INFO InfoGif1;GUI_GIF_IMAGE_INFO InfoGif2;hMem=GUI_ALLOC_AllocZero(1024*1024);Picture_Buffer=GUI_ALLOC_h2p(hMem);Picture_result = f_open(&Picture_file,sFilename,FA_OPEN_EXIStiNG|FA_READ|FA_OPEN_ALWAYS);if(Picture_result != FR_OK){return;}Picture_result=f_read(&Picture_file,Picture_Buffer,Picture_file.fsize,&Picture_bw);if(Picture_result != FR_OK){return;}XSize=GUI_BMP_GetXSize(Picture_Buffer);YSize=GUI_BMP_GetYSize(Picture_Buffer);if(type==0){if(Num==Denom){GUI_BMP_Draw(Picture_Buffer,x,y);}else{GUI_BMP_DrawScaled(Picture_Buffer,x,y,Num,Denom);}}else if(type==1){GUI_JPEG_GetInfo(Picture_Buffer,Picture_file.fsize,&JpegInfo);if(Num==Denom){GUI_JPEG_Draw(Picture_Buffer,Picture_file.fsize,x,y);}else{GUI_JPEG_DrawScaled(Picture_Buffer,Picture_file.fsize,x,y,Num,Denom);}}else if(type==2){GUI_GIF_GetInfo(Picture_Buffer,Picture_file.fsize,&InfoGif1);i=0;if(i

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