QImage and 8 bit unsigner char **

[fyanardi]

Hi all,

I need to display a tiff image on a QWidget, the image is 8 bit-depth, and I need to represent it using 2 dimensional unsigned char so that it can be processed later. I've successfully read the tiff image into the char, but I can't draw it on the QWidget. What I've tried is:

unsigned char pic[512][512] = TiffIO::tiffReadPic("test.tif", pic, &width, &height);
QImage img(width, height,QImage::Format_Indexed8);
 
for(int i = 0; i < 255; i++)
    {
        myColor = qRgb(i, i, i);
        img.setColor(i, myColor);
    }
 
for(int i = 0; i<width; i++)
    for(int j = 0; j<height; ++j)
         img.setPixel(i, j, pic[i][j]);

unsigned char pic[512][512] = TiffIO::tiffReadPic("test.tif", pic, &width, &height);
QImage img(width, height,QImage::Format_Indexed8);

for(int i = 0; i < 255; i++)
    {
        myColor = qRgb(i, i, i);
        img.setColor(i, myColor);
    }

for(int i = 0; i<width; i++)
    for(int j = 0; j<height; ++j)
         img.setPixel(i, j, pic[i][j]);

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But it doesn't give anything, the QWidget remains blank and no error message at all

Any suggestion?

Thanks...