位图读取

Question

需要带调色版的位图信息读取方法,希望能得到点资料.
谢谢高手们.
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Answer 1

for(int i=0;i<tmpHeight;i++)
{
yd=BFH.bfOffBits+i*PerLine;
BYTE *pbyte= new BYTE[600*PerLine+600];
memset(pbyte,0x00,600*PerLine+600);
int  stmp=0;
for(int j=0;j<wNewWidth;j++)
{
xd=yd+j;
fseek(fp,xd,SEEK_SET);
fread(&counts,sizeof(BYTE),1,fp);
BYTE bcounts=counts;
BYTE mcounts=counts>>4;
                           int scounts=mcounts & 0x0F;

int art;
art=bcounts & 0x0F; RGBQUAD color;
color=ColorTab[scounts];
pbyte[stmp++]=color.rgbBlue;
pbyte[stmp++]=color.rgbGreen;
pbyte[stmp++]=color.rgbRed;
tmp=tmp+3;
RGBQUAD color1; 
color1=ColorTab[art];
pbyte[stmp++]=color1.rgbBlue;
pbyte[stmp++]=color1.rgbGreen;
pbyte[stmp++]=color1.rgbRed;
tmp=tmp+3;     
}
file.Write(pbyte,stmp);//位图内容
delete []pbyte;
这个4位转为24位图象的时候有些图象正常有些就不正常,
哪位知道原因啊

Answer 2

for(int i=0;i<tmpHeight;i++)
{
yd=BFH.bfOffBits+i*PerLine;
BYTE *pbyte= new BYTE[600*PerLine+600];
memset(pbyte,0x00,600*PerLine+600);
int  stmp=0;
for(int j=0;j<wNewWidth;j++)
{
xd=yd+j;
fseek(fp,xd,SEEK_SET);
fread(&counts,sizeof(BYTE),1,fp);
BYTE bcounts=counts;
BYTE mcounts=counts>>4;
                  int scounts=mcounts & 0x0F;

int art;
art=bcounts & 0x0F; RGBQUAD color;
color=ColorTab[scounts];
pbyte[stmp++]=color.rgbBlue;
pbyte[stmp++]=color.rgbGreen;
pbyte[stmp++]=color.rgbRed;

RGBQUAD color1; 
color1=ColorTab[art];
pbyte[stmp++]=color1.rgbBlue;
pbyte[stmp++]=color1.rgbGreen;
pbyte[stmp++]=color1.rgbRed;
}
file.Write(pbyte,stmp);//位图内容
delete []pbyte;
}