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Fix shapedwindow test program. 

same commit as in 1.3 branch

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11107 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2016-02-01 14:24:24 +00:00
parent 2b36a14d10
commit 6f799cb648
1 changed files with 7 additions and 1 deletions
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8
examples/shapedwindow.cxx
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@ -86,7 +86,13 @@ Fl_RGB_Image* prepare_shape(int w)
Fl_RGB_Image* img = surf->image();
delete surf;
current->set_current();
return img; // return depth-3 white image on black background
if (img->d() == 4) { // if RGBA image, set its A component equal to its R component
for (int i = 0; i < img->h(); i ++) {
uchar *q = (uchar*)img->array + i * img->ld();
for (int j = 0; j < img->w(); j++, q += 4) *(q+3) = *q;
}
}
return img; // return white image on black background
}
int main(int argc, char **argv) {