Update of /cvsroot/pywin32/pywin32
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv4877
Added Files:
pywin32_preinstall.py
Log Message:
A pre-install script for win32all.
--- NEW FILE: pywin32_preinstall.py ---
# Pre-install script for win32all. Note that as this is run before
# anything is installed, it must not reference any win32all modules!
import sys, os
import _winreg
# win32con constants (but we can't use win32con!)
MB_YESNO = 4
IDYES = 6
IDNO = 7
# for debugging outside of the distutils environment.
if 0:
try:
message_box
except NameError:
import win32gui
def message_box(cap, tit, flags):
return win32gui.MessageBox(0, cap, tit, flags)
# If there is an old WISE built win32all installed, insist on removing that.
app_title = "Python %d.%d combined Win32 extensions" % sys.version_info[:2]
key_name = "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\" + \
app_title
for root in [_winreg.HKEY_LOCAL_MACHINE, _winreg.HKEY_CURRENT_USER]:
try:
key = _winreg.OpenKey(root, key_name)
prog, type_id = _winreg.QueryValueEx(key, "UninstallString")
except OSError, details:
prog = None
if prog:
rc = message_box("An existing version of win32all is installed.\r\n"
"This version must be removed before installing this "
"version.\r\nIf you do not uninstall the previous "
"version,\r\nthe installation will be cancelled."
"\r\n\r\nDo you wish to uninstall the existing version?",
"Uninstall existing version?",
MB_YESNO)
if rc == IDNO:
raise RuntimeError, "You must uninstall the previous version"
# We know out versions used short-names, so a simple 'split()' will
# do to parse our args
f = os.popen(prog)
f.read()
f.close()
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