Yeah, patch https://metacpan.org/source/SREZIC/Tk-804.033/pTk/mTk/win/tkWinDialog.c to make it resizable

--- pTk\mTk\win\tkWinDialog.c    2016-08-10 20:17:09.500000000 -0700
+++ pTk\mTk\win\tkWinDialog.c    2016-08-10 20:17:07.453125000 -0700
@@ -29,6 +29,9 @@
 #include <shlobj.h>     /* includes SHBrowseForFolder */
 
 /* These needed for compilation with VC++ 5.2 */
+#ifndef BIF_NEWDIALOGSTYLE
+#define BIF_NEWDIALOGSTYLE 0x00000040
+#endif
 #ifndef BIF_EDITBOX
 #define BIF_EDITBOX 0x10
 #endif
@@ -1777,7 +1780,7 @@
      * Set flags to add edit box (needs 4.71 Shell DLLs), status text
+ line,
      * validate edit box and
      */
-    bInfo.ulFlags  =  BIF_EDITBOX | BIF_STATUSTEXT | BIF_RETURNFSANCE
+STORS
+    bInfo.ulFlags  =  BIF_NEWDIALOGSTYLE | BIF_EDITBOX | BIF_STATUSTE
+XT | BIF_RETURNFSANCESTORS
         | BIF_VALIDATE;
 
     /*
[download]

Thats the simplest way. Could also set width height with SetWindowPos function (Windows) but that requirs more pTk chops.

Also since I forgot how to fix this nonsense

 gcc -s -L../zlib -o pngtest pngtest.o libpng.a -lz -lm
gcc  -s -o example example.o libz.a
gcc  -s -o minigzip minigzip.o libz.a
gcc  -s -o example_d example.o libzdll.a
example.o:example.c:(.text+0x33): undefined reference to `compress'
example.o:example.c:(.text+0x60): undefined reference to `uncompress'
[download]

Since Tk::PNG doesn't need those examples get rid of that junk

#~ Tk-804.033\PNG\zlib\Makefile
#~ Tk-804.033\PNG\zlib\win32\Makefile.gcc
#~ all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) example minigzip example_d
+ minigzip_d
all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB)
[download]

That should do it, although when I test this I run into memory access violation, and then I give up :)