--- qt-x11-free-3.3.8/src/kernel/qpngio.cpp.orig	2007-02-02 23:01:15.000000000 +0900
+++ qt-x11-free-3.3.8/src/kernel/qpngio.cpp	2011-01-02 09:20:40.151999994 +0900
@@ -159,7 +159,11 @@
 		image.setColor( i, qRgba(c,c,c,0xff) );
 	    }
 	    if ( png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ) {
+#if PNG_LIBPNG_VER < 10400
 		const int g = info_ptr->trans_values.gray;
+#else
+		const int g = info_ptr->trans_color.gray;
+#endif
 		if (g < ncols) {
 		    image.setAlphaBuffer(TRUE);
 		    image.setColor(g, image.color(g) & RGB_MASK);
@@ -187,7 +191,11 @@
 		    info_ptr->palette[i].red,
 		    info_ptr->palette[i].green,
 		    info_ptr->palette[i].blue,
+#if PNG_LIBPNG_VER < 10400
 		    info_ptr->trans[i]
+#else
+		    info_ptr->trans_alpha[i]
+#endif
 		    )
 		);
 		i++;