text line overlay

[haratron]

I'm using this snippet to crop an input image into textlines:

Boxa* boxes = api->GetComponentImages(tesseract::RIL_TEXTLINE, true, false, 0, NULL, NULL, NULL);

for (int i = 0; i < boxes->n; i++) {

    BOX* box = boxaGetBox(boxes, i, L_CLONE);

    PIX* pixd= pixClipRectangle(image, box, NULL);

//etc

Is there another function I can use to have the detected textlines overlaid on the original image? Or even better make an exact crop (mask) of the image instead of getting the rectangle?