www.pudn.com > cwin.rar > GETBKX.C

    /*----------------------------------------------------------- 
        程序 getblockXMS : 将屏幕图象保存到扩充内存中去 
    -----------------------------------------------------------*/ 
    #include  
 
    int _Cdecl getblockXMS(left,top,right,bottom) 
    int left;          /* 屏幕图象块左上角列坐标(以字节为单位) */ 
    int top;           /* 屏幕图象块左上角行坐标(以象素为单位) */ 
    int right;         /* 屏幕图象块右下角列坐标(以字节为单位) */ 
    int bottom;        /* 屏幕图象块右下角行坐标(以象素为单位) */ 
    { 
        int      handle; 
        int      width = right-left+1; 
        int      size  = (((long)bottom-top+1)*width*4)/1024+1; 
        unsigned from  = (top+_ScreenTop)*_ScreenWidth+left; 
        unsigned to    = (bottom+1+_ScreenTop)*_ScreenWidth; 
        unsigned i,j; 
 
        if((handle=_GetXMS(size))!=0) 
        { 
            /*-- 参数准备 -------------------------------------*/ 
            _Emb.len        = width; 
            _Emb.sour_han   = 0; 
            _Emb.sour_off   = FP_SEG(_HanFont); 
            _Emb.sour_off <<= 16; 
            _Emb.sour_off  += FP_OFF(_HanFont); 
            _Emb.dest_han   = handle; 
            _Emb.dest_off   = 0; 
 
            /*-- 将屏幕数据逐行经常规内存转储至扩充内存 -------*/ 
            _VideoBusy = YES; 
            for(j=from;j