[master] Fixed incorrect examples of callback prototypes in the manual,

that were introduced in libpng-1.0.0.

ANNOUNCE

@@ -61,6 +61,8 @@ version 1.4.6beta07 [March 19, 2011]
     function prototypes in the manual.  The row_info struct is png_row_infop.
   Added a request in the manual that applications do not use "png_" or
     "PNG_" to begin any of their own symbols.
+  Fixed incorrect examples of callback prototypes in the manual, that were
+    introduced in libpng-1.0.0.
 
 Send comments/corrections/commendations to glennrp at users.sourceforge.net
 or to png-mng-implement at lists.sf.net (subscription required; visit

CHANGES

@@ -2773,6 +2773,8 @@ version 1.4.6beta07 [March 19, 2011]
     function prototypes in the manual.  The row_info struct is png_row_infop.
   Added a request in the manual that applications do not use "png_" or
     "PNG_" to begin any of their own symbols.
+  Fixed incorrect examples of callback prototypes in the manual, that were
+    introduced in libpng-1.0.0.
 
 Send comments/corrections/commendations to glennrp at users.sourceforge.net
 or to png-mng-implement at lists.sf.net (subscription required; visit

libpng-1.4.6beta07.txt

@@ -278,7 +278,7 @@ Setting up callback code
 You can set up a callback function to handle any unknown chunks in the
 input stream. You must supply the function
 
-    read_chunk_callback(png_ptr ptr,
+    read_chunk_callback(png_structp png_ptr,
          png_unknown_chunkp chunk);
     {
        /* The unknown chunk structure contains your
@@ -324,8 +324,8 @@ called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
 You must supply a function
 
-    void read_row_callback(png_ptr ptr, png_uint_32 row,
-       int pass);
+    void read_row_callback(png_structp png_ptr,
+       png_uint_32 row, int pass);
     {
       /* put your code here */
     }
@@ -1759,7 +1759,7 @@ called after each row has been written, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
 You must supply a function
 
-    void write_row_callback(png_ptr, png_uint_32 row,
+    void write_row_callback(png_structp png_ptr, png_uint_32 row,
        int pass);
     {
       /* put your code here */

libpng.3

@@ -1173,7 +1173,7 @@ instead of setting a flag to be acted upon later.
 You can set up a callback function to handle any unknown chunks in the
 input stream. You must supply the function
 
-    read_chunk_callback(png_ptr ptr,
+    read_chunk_callback(png_structp png_ptr,
          png_unknown_chunkp chunk);
     {
        /* The unknown chunk structure contains your
@@ -1219,8 +1219,8 @@ called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
 You must supply a function
 
-    void read_row_callback(png_ptr ptr, png_uint_32 row,
-       int pass);
+    void read_row_callback(png_structp png_ptr,
+       png_uint_32 row, int pass);
     {
       /* put your code here */
     }
@@ -2654,7 +2654,7 @@ called after each row has been written, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
 You must supply a function
 
-    void write_row_callback(png_ptr, png_uint_32 row,
+    void write_row_callback(png_structp png_ptr, png_uint_32 row,
        int pass);
     {
       /* put your code here */