# HG changeset patch
# User mhessling@81767d24-ef19-dc11-ae90-00e081727c95
# Date 1309304339 0
# Node ID b905fd8e7fd16fca4d28163fbc9f3311aaba0691
# Parent  b58032a619b9ab71fbd85ff8c32777e19c11a3fe
Use _tempnam() on Windows instead of tmpnam() for dw_*_from_data() functions.
This overcomes bug in Windows tmpnam() which does not always generate a temporary file
name in a directory that can written to.
Modified dwtest.c to handle file errors more gracefully.

diff -r b58032a619b9 -r b905fd8e7fd1 dwtest.c
--- a/dwtest.c	Tue Jun 28 20:30:29 2011 +0000
+++ b/dwtest.c	Tue Jun 28 23:38:59 2011 +0000
@@ -37,6 +37,27 @@
 int iteration = 0;
 void create_button( int);
 
+static char folder_ico[1718] = {
+    0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x10, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x01, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x68, 0x05, 0x00, 0x00, 0x4E, 0x01, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00,
+    0x80, 0x00, 0x80, 0x80, 0x00, 0x00, 0xC0, 0xC0, 0xC0, 0x00, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x30, 0x03, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3B, 0x37, 0x77, 0x77, 0x77, 0x77, 0xB7, 0x33, 0x3B, 0x37, 0x77, 0x77, 0x77, 0x77, 0xB7, 0x33, 0x3B, 0x37, 0x77, 0x77, 0x77, 0x77, 0xB7, 0x33, 0x3B, 0x37,
+    0x77, 0x77, 0x77, 0x77, 0xB7, 0x33, 0x37, 0x37, 0x77, 0x77, 0x77, 0x77, 0xB7, 0x33, 0x37, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x33, 0x37, 0x73, 0x33, 0x33, 0x33, 0x33, 0x33, 0x30, 0x37, 0x77, 0x77, 0x7F, 0xFF, 0xFF, 0x30, 0x00, 0x3F, 0x77, 0x77, 0xF3, 0x33, 0x33, 0x30, 0x00, 0x03, 0xFF, 0xFF, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xC0, 0x01, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x81, 0xFF, 0x00, 0x00, 0xC3, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x80,
+    0x00, 0x00, 0xC0, 0xC0, 0xC0, 0x00, 0xC0, 0xDC, 0xC0, 0x00, 0xF0, 0xCA, 0xA6, 0x00, 0x04, 0x04, 0x04, 0x00, 0x08, 0x08, 0x08, 0x00, 0x0C, 0x0C, 0x0C, 0x00, 0x11, 0x11, 0x11, 0x00, 0x16, 0x16, 0x16, 0x00, 0x1C, 0x1C, 0x1C, 0x00, 0x22, 0x22, 0x22, 0x00, 0x29, 0x29, 0x29, 0x00, 0x55, 0x55, 0x55, 0x00, 0x4D, 0x4D, 0x4D, 0x00, 0x42, 0x42, 0x42, 0x00, 0x39, 0x39, 0x39, 0x00, 0x80, 0x7C, 0xFF, 0x00, 0x50, 0x50, 0xFF, 0x00, 0x93, 0x00, 0xD6, 0x00, 0xFF, 0xEC, 0xCC, 0x00, 0xC6, 0xD6, 0xEF, 0x00, 0xD6, 0xE7, 0xE7, 0x00, 0x90, 0xA9, 0xAD, 0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x66, 0x00, 0x00, 0x00,
+    0x99, 0x00, 0x00, 0x00, 0xCC, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x33, 0x33, 0x00, 0x00, 0x33, 0x66, 0x00, 0x00, 0x33, 0x99, 0x00, 0x00, 0x33, 0xCC, 0x00, 0x00, 0x33, 0xFF, 0x00, 0x00, 0x66, 0x00, 0x00, 0x00, 0x66, 0x33, 0x00, 0x00, 0x66, 0x66, 0x00, 0x00, 0x66, 0x99, 0x00, 0x00, 0x66, 0xCC, 0x00, 0x00, 0x66, 0xFF, 0x00, 0x00, 0x99, 0x00, 0x00, 0x00, 0x99, 0x33, 0x00, 0x00, 0x99, 0x66, 0x00, 0x00, 0x99, 0x99, 0x00, 0x00, 0x99, 0xCC, 0x00, 0x00, 0x99, 0xFF, 0x00, 0x00, 0xCC, 0x00, 0x00, 0x00, 0xCC, 0x33, 0x00, 0x00, 0xCC, 0x66, 0x00, 0x00, 0xCC, 0x99, 0x00, 0x00, 0xCC, 0xCC, 0x00, 0x00, 0xCC,
+    0xFF, 0x00, 0x00, 0xFF, 0x66, 0x00, 0x00, 0xFF, 0x99, 0x00, 0x00, 0xFF, 0xCC, 0x00, 0x33, 0x00, 0x00, 0x00, 0x33, 0x00, 0x33, 0x00, 0x33, 0x00, 0x66, 0x00, 0x33, 0x00, 0x99, 0x00, 0x33, 0x00, 0xCC, 0x00, 0x33, 0x00, 0xFF, 0x00, 0x33, 0x33, 0x00, 0x00, 0x33, 0x33, 0x33, 0x00, 0x33, 0x33, 0x66, 0x00, 0x33, 0x33, 0x99, 0x00, 0x33, 0x33, 0xCC, 0x00, 0x33, 0x33, 0xFF, 0x00, 0x33, 0x66, 0x00, 0x00, 0x33, 0x66, 0x33, 0x00, 0x33, 0x66, 0x66, 0x00, 0x33, 0x66, 0x99, 0x00, 0x33, 0x66, 0xCC, 0x00, 0x33, 0x66, 0xFF, 0x00, 0x33, 0x99, 0x00, 0x00, 0x33, 0x99, 0x33, 0x00, 0x33, 0x99, 0x66, 0x00, 0x33, 0x99,
+    0x99, 0x00, 0x33, 0x99, 0xCC, 0x00, 0x33, 0x99, 0xFF, 0x00, 0x33, 0xCC, 0x00, 0x00, 0x33, 0xCC, 0x33, 0x00, 0x33, 0xCC, 0x66, 0x00, 0x33, 0xCC, 0x99, 0x00, 0x33, 0xCC, 0xCC, 0x00, 0x33, 0xCC, 0xFF, 0x00, 0x33, 0xFF, 0x33, 0x00, 0x33, 0xFF, 0x66, 0x00, 0x33, 0xFF, 0x99, 0x00, 0x33, 0xFF, 0xCC, 0x00, 0x33, 0xFF, 0xFF, 0x00, 0x66, 0x00, 0x00, 0x00, 0x66, 0x00, 0x33, 0x00, 0x66, 0x00, 0x66, 0x00, 0x66, 0x00, 0x99, 0x00, 0x66, 0x00, 0xCC, 0x00, 0x66, 0x00, 0xFF, 0x00, 0x66, 0x33, 0x00, 0x00, 0x66, 0x33, 0x33, 0x00, 0x66, 0x33, 0x66, 0x00, 0x66, 0x33, 0x99, 0x00, 0x66, 0x33, 0xCC, 0x00, 0x66, 0x33,
+    0xFF, 0x00, 0x66, 0x66, 0x00, 0x00, 0x66, 0x66, 0x33, 0x00, 0x66, 0x66, 0x66, 0x00, 0x66, 0x66, 0x99, 0x00, 0x66, 0x66, 0xCC, 0x00, 0x66, 0x99, 0x00, 0x00, 0x66, 0x99, 0x33, 0x00, 0x66, 0x99, 0x66, 0x00, 0x66, 0x99, 0x99, 0x00, 0x66, 0x99, 0xCC, 0x00, 0x66, 0x99, 0xFF, 0x00, 0x66, 0xCC, 0x00, 0x00, 0x66, 0xCC, 0x33, 0x00, 0x66, 0xCC, 0x99, 0x00, 0x66, 0xCC, 0xCC, 0x00, 0x66, 0xCC, 0xFF, 0x00, 0x66, 0xFF, 0x00, 0x00, 0x66, 0xFF, 0x33, 0x00, 0x66, 0xFF, 0x99, 0x00, 0x66, 0xFF, 0xCC, 0x00, 0xCC, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xCC, 0x00, 0x99, 0x99, 0x00, 0x00, 0x99, 0x33, 0x99, 0x00, 0x99, 0x00,
+    0x99, 0x00, 0x99, 0x00, 0xCC, 0x00, 0x99, 0x00, 0x00, 0x00, 0x99, 0x33, 0x33, 0x00, 0x99, 0x00, 0x66, 0x00, 0x99, 0x33, 0xCC, 0x00, 0x99, 0x00, 0xFF, 0x00, 0x99, 0x66, 0x00, 0x00, 0x99, 0x66, 0x33, 0x00, 0x99, 0x33, 0x66, 0x00, 0x99, 0x66, 0x99, 0x00, 0x99, 0x66, 0xCC, 0x00, 0x99, 0x33, 0xFF, 0x00, 0x99, 0x99, 0x33, 0x00, 0x99, 0x99, 0x66, 0x00, 0x99, 0x99, 0x99, 0x00, 0x99, 0x99, 0xCC, 0x00, 0x99, 0x99, 0xFF, 0x00, 0x99, 0xCC, 0x00, 0x00, 0x99, 0xCC, 0x33, 0x00, 0x66, 0xCC, 0x66, 0x00, 0x99, 0xCC, 0x99, 0x00, 0x99, 0xCC, 0xCC, 0x00, 0x99, 0xCC, 0xFF, 0x00, 0x99, 0xFF, 0x00, 0x00, 0x99, 0xFF,
+    0x33, 0x00, 0x99, 0xCC, 0x66, 0x00, 0x99, 0xFF, 0x99, 0x00, 0x99, 0xFF, 0xCC, 0x00, 0x99, 0xFF, 0xFF, 0x00, 0xCC, 0x00, 0x00, 0x00, 0x99, 0x00, 0x33, 0x00, 0xCC, 0x00, 0x66, 0x00, 0xCC, 0x00, 0x99, 0x00, 0xCC, 0x00, 0xCC, 0x00, 0x99, 0x33, 0x00, 0x00, 0xCC, 0x33, 0x33, 0x00, 0xCC, 0x33, 0x66, 0x00, 0xCC, 0x33, 0x99, 0x00, 0xCC, 0x33, 0xCC, 0x00, 0xCC, 0x33, 0xFF, 0x00, 0xCC, 0x66, 0x00, 0x00, 0xCC, 0x66, 0x33, 0x00, 0x99, 0x66, 0x66, 0x00, 0xCC, 0x66, 0x99, 0x00, 0xCC, 0x66, 0xCC, 0x00, 0x99, 0x66, 0xFF, 0x00, 0xCC, 0x99, 0x00, 0x00, 0xCC, 0x99, 0x33, 0x00, 0xCC, 0x99, 0x66, 0x00, 0xCC, 0x99,
+    0x99, 0x00, 0xCC, 0x99, 0xCC, 0x00, 0xCC, 0x99, 0xFF, 0x00, 0xCC, 0xCC, 0x00, 0x00, 0xCC, 0xCC, 0x33, 0x00, 0xCC, 0xCC, 0x66, 0x00, 0xCC, 0xCC, 0x99, 0x00, 0xCC, 0xCC, 0xCC, 0x00, 0xCC, 0xCC, 0xFF, 0x00, 0xCC, 0xFF, 0x00, 0x00, 0xCC, 0xFF, 0x33, 0x00, 0x99, 0xFF, 0x66, 0x00, 0xCC, 0xFF, 0x99, 0x00, 0xCC, 0xFF, 0xCC, 0x00, 0xCC, 0xFF, 0xFF, 0x00, 0xCC, 0x00, 0x33, 0x00, 0xFF, 0x00, 0x66, 0x00, 0xFF, 0x00, 0x99, 0x00, 0xCC, 0x33, 0x00, 0x00, 0xFF, 0x33, 0x33, 0x00, 0xFF, 0x33, 0x66, 0x00, 0xFF, 0x33, 0x99, 0x00, 0xFF, 0x33, 0xCC, 0x00, 0xFF, 0x33, 0xFF, 0x00, 0xFF, 0x66, 0x00, 0x00, 0xFF, 0x66,
+    0x33, 0x00, 0xCC, 0x66, 0x66, 0x00, 0xFF, 0x66, 0x99, 0x00, 0xFF, 0x66, 0xCC, 0x00, 0xCC, 0x66, 0xFF, 0x00, 0xFF, 0x99, 0x00, 0x00, 0xFF, 0x99, 0x33, 0x00, 0xFF, 0x99, 0x66, 0x00, 0xFF, 0x99, 0x99, 0x00, 0xFF, 0x99, 0xCC, 0x00, 0xFF, 0x99, 0xFF, 0x00, 0xFF, 0xCC, 0x00, 0x00, 0xFF, 0xCC, 0x33, 0x00, 0xFF, 0xCC, 0x66, 0x00, 0xFF, 0xCC, 0x99, 0x00, 0xFF, 0xCC, 0xCC, 0x00, 0xFF, 0xCC, 0xFF, 0x00, 0xFF, 0xFF, 0x33, 0x00, 0xCC, 0xFF, 0x66, 0x00, 0xFF, 0xFF, 0x99, 0x00, 0xFF, 0xFF, 0xCC, 0x00, 0x66, 0x66, 0xFF, 0x00, 0x66, 0xFF, 0x66, 0x00, 0x66, 0xFF, 0xFF, 0x00, 0xFF, 0x66, 0x66, 0x00, 0xFF, 0x66,
+    0xFF, 0x00, 0xFF, 0xFF, 0x66, 0x00, 0x21, 0x00, 0xA5, 0x00, 0x5F, 0x5F, 0x5F, 0x00, 0x77, 0x77, 0x77, 0x00, 0x86, 0x86, 0x86, 0x00, 0x96, 0x96, 0x96, 0x00, 0xCB, 0xCB, 0xCB, 0x00, 0xB2, 0xB2, 0xB2, 0x00, 0xD7, 0xD7, 0xD7, 0x00, 0xDD, 0xDD, 0xDD, 0x00, 0xE3, 0xE3, 0xE3, 0x00, 0xEA, 0xEA, 0xEA, 0x00, 0xF1, 0xF1, 0xF1, 0x00, 0xF8, 0xF8, 0xF8, 0x00, 0xF0, 0xFB, 0xFF, 0x00, 0xA4, 0xA0, 0xA0, 0x00, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x0A, 0x0A,
+    0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x0A, 0x0A, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x4B, 0x52, 0x7A, 0x52, 0xA0, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x58, 0xA0, 0x52, 0x4B, 0x52, 0x7A, 0x52, 0xA0, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x7A, 0x58, 0xA0, 0x52, 0x4B, 0x52, 0x7A, 0x52, 0xA0, 0x9A, 0x9A,
+    0x9A, 0x9A, 0x9A, 0x9A, 0x9A, 0xA0, 0x58, 0xA0, 0x52, 0x4B, 0x52, 0x7A, 0x52, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0x79, 0xA0, 0x52, 0x4B, 0x52, 0x7A, 0x52, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0x7A, 0xA0, 0x52, 0x4B, 0x52, 0x7A, 0x52, 0xFF, 0xF6, 0xF6, 0xF6, 0xF6, 0xF6, 0xFF, 0xFF, 0xFF, 0x9A, 0xF6, 0x52, 0x4B, 0x52, 0xA0, 0x9A, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x0A, 0x52, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xA0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x2A, 0x0A, 0x0A, 0x0A, 0x52, 0xFF, 0xA0, 0xA0, 0xA0, 0xA0, 0xFF, 0x52, 0x52, 0x52,
+    0x52, 0x52, 0x2A, 0x0A, 0x0A, 0x0A, 0x0A, 0x52, 0xFF, 0xFF, 0xFF, 0xF6, 0x52, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x52, 0x52, 0x52, 0x52, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0xC0, 0x01, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x07,
+    0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x81, 0xFF, 0x00, 0x00, 0xC3, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00,
+};
+
 HWND mainwindow,
     entryfield,
     checkable_menuitem,
@@ -259,26 +280,29 @@
 {
     int i,len;
     fp = fopen( current_file, "r" );
-    lp = (char **)calloc( 1000,sizeof(char *));
-    /* should test for out of memory */
-    max_linewidth=0;
-    for ( i = 0; i < 1000; i++ )
+    if ( fp )
     {
-        lp[i] = (char *)calloc(1, 1025);
-        if ( fgets( lp[i], 1024, fp ) == NULL )
-            break;
-        len = (int)strlen( lp[i] );
-        if ( len > max_linewidth )
-            max_linewidth = len;
-        if ( lp[i][len - 1] == '\n' )
-            lp[i][len - 1] = '\0';
+       lp = (char **)calloc( 1000,sizeof(char *));
+       /* should test for out of memory */
+       max_linewidth=0;
+       for ( i = 0; i < 1000; i++ )
+       {
+           lp[i] = (char *)calloc(1, 1025);
+           if ( fgets( lp[i], 1024, fp ) == NULL )
+               break;
+           len = (int)strlen( lp[i] );
+           if ( len > max_linewidth )
+               max_linewidth = len;
+           if ( lp[i][len - 1] == '\n' )
+               lp[i][len - 1] = '\0';
+       }
+       num_lines = i;
+       fclose( fp );
+       dw_scrollbar_set_range(hscrollbar, max_linewidth, cols);
+       dw_scrollbar_set_pos(hscrollbar, 0);
+       dw_scrollbar_set_range(vscrollbar, num_lines, rows);
+       dw_scrollbar_set_pos(vscrollbar, 0);
     }
-    num_lines = i;
-    fclose( fp );
-    dw_scrollbar_set_range(hscrollbar, max_linewidth, cols);
-    dw_scrollbar_set_pos(hscrollbar, 0);
-    dw_scrollbar_set_range(vscrollbar, num_lines, rows);
-    dw_scrollbar_set_pos(vscrollbar, 0);
 }
 
 void draw_file( int row, int col )
@@ -691,8 +715,11 @@
 int DWSIGNAL switch_page_cb( HWND window, unsigned long page_num, void *itemdata )
 {
     FILE *fp=fopen("log","a");
-    fprintf(fp,"DW_SIGNAL_SWITCH_PAGE: Window: %x PageNum: %u Itemdata: %x\n", (unsigned int)window, (unsigned int)page_num, (unsigned int)itemdata );
-    fclose(fp);
+    if ( fp )
+    {
+       fprintf(fp,"DW_SIGNAL_SWITCH_PAGE: Window: %x PageNum: %u Itemdata: %x\n", (unsigned int)window, (unsigned int)page_num, (unsigned int)itemdata );
+       fclose(fp);
+    }
     return 0;
 }
 
@@ -1161,7 +1188,7 @@
     dw_signal_connect( abutton1, DW_SIGNAL_CLICKED, DW_SIGNAL_FUNC(change_color_yellow_callback), NULL );
     dw_box_pack_start( filetoolbarbox, 0, 25, 5, FALSE, FALSE, 0 );
 
-    abutton1 = dw_bitmapbutton_new_from_file( "Should be under Top button", 0, "junk" );
+    abutton1 = dw_bitmapbutton_new_from_data( "A button from data", 0, folder_ico, 1718 );
     dw_box_pack_start( filetoolbarbox, abutton1, 25, 25, FALSE, FALSE, 0);
     dw_signal_connect( abutton1, DW_SIGNAL_CLICKED, DW_SIGNAL_FUNC(redraw_button_box_callback), NULL );
     dw_box_pack_start( filetoolbarbox, 0, 25, 5, FALSE, FALSE, 0 );
diff -r b58032a619b9 -r b905fd8e7fd1 win/dw.c
--- a/win/dw.c	Tue Jun 28 20:30:29 2011 +0000
+++ b/win/dw.c	Tue Jun 28 23:38:59 2011 +0000
@@ -47,6 +47,15 @@
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #endif
 
+/*
+ * For the dw*from_data() functions, a temporary file is required to write
+ * the contents of the image to so it can be loaded by the Win32 API
+ * We use _tempnam() which uses TMP env variable by default. It can be passed
+ * an alternate temporary directory if TMP is not set, so we get the value
+ * of TEMP and store it here.
+ */
+static char _dw_alternate_temp_dir[MAX_PATH];
+
 FILE *dbgfp = NULL;
 
 int main(int argc, char *argv[]);
@@ -3540,7 +3549,7 @@
    WNDCLASS wc;
    int z;
    INITCOMMONCONTROLSEX icc;
-   char *fname;
+   char *fname, *alttmpdir;
    HFONT oldfont;
 
    /* Initialize our thread local storage */
@@ -3666,6 +3675,17 @@
       dbgfp = fopen( fname, "w" );
    }
    /*
+    * Get an alternate temporary directory in case TMP doesn't exist
+    */
+   if ( (alttmpdir = getenv( "TEMP" ) ) == NULL )
+   {
+      strcpy( _dw_alternate_temp_dir, "c:\\tmp" );
+   }
+   else
+   {
+      strcpy( _dw_alternate_temp_dir, alttmpdir );
+   }
+   /*
     * Get screen size. Used to make calls to dw_screen_width()
     * and dw_screen-height() quicker, but to alos limit the
     * default size of windows.
@@ -4003,7 +4023,7 @@
    int z, size = 9;
    LOGFONT lf;
    HDC hdc = GetDC(handle);
-   
+
    for(z=0;z<strlen(fontname);z++)
    {
       if(fontname[z]=='.')
@@ -4075,7 +4095,7 @@
 void API dw_font_set_default(char *fontname)
 {
     HFONT oldfont = _DefaultFont;
-    
+
     _DefaultFont = _acquire_font(HWND_DESKTOP, fontname);
     if(oldfont)
     {
@@ -4107,11 +4127,11 @@
             handle = thisbox->grouphwnd;
         }
     }
-        
+
     /* This needs to be after we get the correct handle */
     oldfont = (HFONT)SendMessage(handle, WM_GETFONT, 0, 0);
     hfont = _acquire_font(handle, fontname);
-    
+
     if (fontname)
     {
         if(cinfo)
@@ -4151,14 +4171,14 @@
    char *str = NULL;
    char *bold = "";
    char *italic = "";
-    
+
    if(currfont && *currfont)
       lf = _get_logfont(NULL, currfont);
-      
+
    cf.lStructSize = sizeof(cf);
    cf.Flags = CF_SCREENFONTS | CF_INITTOLOGFONTSTRUCT;
-   cf.lpLogFont = &lf;    
-    
+   cf.lpLogFont = &lf;
+
    if(ChooseFont(&cf))
    {
       str = (char *)malloc( 100 );
@@ -4166,7 +4186,7 @@
       {
          int height;
          HDC hdc = GetDC(NULL);
-         
+
          if ( lf.lfWeight > FW_MEDIUM )
             bold = " Bold";
          if ( lf.lfItalic )
@@ -4213,7 +4233,7 @@
       {
          int height;
          HDC hdc = GetDC(handle);
-         
+
          if ( lf.lfWeight > FW_MEDIUM )
             bold = " Bold";
          if ( lf.lfItalic )
@@ -5406,7 +5426,7 @@
 
    if ( !(bubble = calloc(1, sizeof(BubbleButton))) )
       return 0;
-   file = tmpnam( NULL );
+   file = _tempnam( _dw_alternate_temp_dir, "dw" );
    if ( file != NULL )
    {
       fp = fopen( file, "wb" );
@@ -5428,9 +5448,11 @@
       else
       {
          unlink( file );
+         free( file );
          return 0;
       }
       unlink( file );
+      free( file );
    }
 
    tmp = CreateWindow( BUTTONCLASSNAME,
@@ -5769,7 +5791,7 @@
    }
    else if (data)
    {
-      file = tmpnam( NULL );
+      file = _tempnam( _dw_alternate_temp_dir, "dw" );
       if ( file != NULL )
       {
          fp = fopen( file, "wb" );
@@ -5785,9 +5807,11 @@
          else
          {
             unlink( file );
+            free( file );
             return;
          }
          unlink( file );
+         free( file );
       }
       if (icon == 0 && hbitmap == 0)
          return;
@@ -5963,7 +5987,7 @@
    {
       int z, x = 0;
       Item *tmpitem, *thisitem = thisbox->items;
-      
+
       /* Do some sanity bounds checking */
       if(index < 0)
         index = 0;
@@ -6048,7 +6072,7 @@
  * Parameters:
  *       box: Window handle of the box to be packed into.
  *       item: Window handle of the item to be back.
- *       index: 0 based index of packed items. 
+ *       index: 0 based index of packed items.
  *       width: Width in pixels of the item or -1 to be self determined.
  *       height: Height in pixels of the item or -1 to be self determined.
  *       hsize: TRUE if the window (widget) should expand horizontally to fill space given.
@@ -6073,7 +6097,7 @@
  */
 void API dw_box_pack_start(HWND box, HWND item, int width, int height, int hsize, int vsize, int pad)
 {
-    /* 65536 is the table limit on GTK... 
+    /* 65536 is the table limit on GTK...
      * seems like a high enough value we will never hit it here either.
      */
     _dw_box_pack(box, item, 65536, width, height, hsize, vsize, pad, "dw_box_pack_start()");
@@ -7638,7 +7662,7 @@
 
    if ( !data )
       return 0;
-   file = tmpnam( NULL );
+   file = _tempnam( _dw_alternate_temp_dir, "dw" );
    if ( file != NULL )
    {
       fp = fopen( file, "wb" );
@@ -7651,9 +7675,11 @@
       else
       {
          unlink( file );
+         free( file );
          return 0;
       }
       unlink( file );
+      free( file );
    }
    return (HICN)icon;
 }
@@ -8887,7 +8913,7 @@
 
    pixmap->handle = handle;
 
-   file = tmpnam( NULL );
+   file = _tempnam( _dw_alternate_temp_dir, "dw" );
    if ( file != NULL )
    {
       fp = fopen( file, "wb" );
@@ -8901,10 +8927,12 @@
       else
       {
          unlink( file );
+         free( file );
          free( pixmap );
          return NULL;
       }
       unlink( file );
+      free( file );
    }
 
    if ( !pixmap->hbm )