struct.pack has become picky about h (short) and H (unsigned short).
diff --git a/Mac/Demo/imgbrowse/mac_image.py b/Mac/Demo/imgbrowse/mac_image.py
index c4b034e..4e3881f 100644
--- a/Mac/Demo/imgbrowse/mac_image.py
+++ b/Mac/Demo/imgbrowse/mac_image.py
@@ -13,7 +13,7 @@
"""kludge a pixmap together"""
fmtinfo = _fmt_to_mac[fmt]
- rv = struct.pack("lhhhhhhhlllhhhhlll",
+ rv = struct.pack("lHhhhhhhlllhhhhlll",
id(data)+MacOS.string_id_to_buffer, # HACK HACK!!
w*2 + 0x8000,
0, 0, h, w,
diff --git a/Mac/Lib/PixMapWrapper.py b/Mac/Lib/PixMapWrapper.py
index 39e5f8e..72a64ba 100644
--- a/Mac/Lib/PixMapWrapper.py
+++ b/Mac/Lib/PixMapWrapper.py
@@ -15,7 +15,7 @@
# PixMap data structure element format (as used with struct)
_pmElemFormat = {
'baseAddr':'l', # address of pixel data
- 'rowBytes':'h', # bytes per row, plus 0x8000
+ 'rowBytes':'H', # bytes per row, plus 0x8000
'bounds':'hhhh', # coordinates imposed over pixel data
'top':'h',
'left':'h',