def OnMinMaxInfo (self, hwnd, msg, wparam, lparam):
ur"""Prevent the dialog from resizing vertically by extracting
the window's current size and using the minmaxinfo message
to set the maximum & minimum window heights to be its current height.
"""
dlg_l, dlg_t, dlg_r, dlg_b = wrapped (win32gui.GetWindowRect, hwnd)
#
# If returning from minmization, do nothing
#
if wrapped (win32gui.GetClientRect, hwnd) == (0, 0, 0, 0):
return 0
#
# MINMAXINFO is a struct of 5 POINT items, each of which
# is a pair of LONGs. We extract the structure into a list,
# set the Y coord of MaxTrackSize and of MinTrackSize to be
# the window's current height and write the data back into
# the same place.
#
POINT_FORMAT = "LL"
MINMAXINO_FORMAT = 5 * POINT_FORMAT
data = win32gui.PyGetString (lparam, struct.calcsize (MINMAXINO_FORMAT))
minmaxinfo = list (struct.unpack (MINMAXINO_FORMAT, data))
minmaxinfo[9] = minmaxinfo[7] = dlg_b - dlg_t
win32gui.PySetMemory (lparam, struct.pack (MINMAXINO_FORMAT, *minmaxinfo))
return 0
def OnProgressMessage(self, hwnd, msg, wparam, lparam):
"""Respond to a progress update from within the progress
thread. LParam will be a pointer to a string containing
a utf8-encoded string which is to be displayed in the
dialog's progress static.
"""
message = marshal.loads(win32gui.PyGetString(lparam, wparam))
self._set_item(self._progress_id, message)
def OnProgressComplete(self, hwnd, msg, wparam, lparam):
ur"""Respond to the a message signalling that all processing is
now complete by re-enabling the ok button, disabling cancel,
and setting focus to the ok so a return or space will close
the dialog.
"""
message = marshal.loads(win32gui.PyGetString(lparam, wparam))
self._set_item(self._progress_id, message)
self._enable(win32con.IDCANCEL, False)
self._enable(win32con.IDOK, True)
wrapped(win32gui.SetFocus,
wrapped(win32gui.GetDlgItem, hwnd, win32con.IDOK))
def OnProgressComplete(self, hwnd, msg, wparam, lparam):
"""Respond to the a message signalling that all processing is
now complete by re-enabling the ok button, disabling cancel,
and setting focus to the ok so a return or space will close
the dialog.
"""
try:
message = marshal.loads(win32gui.PyGetString(lparam, wparam))
except ValueError:
message = "- Complete -"
self._set_item(self._progress_id, message)
self._enable(win32con.IDCANCEL, False)
self._enable(win32con.IDOK, True)
PostMessage(self.hwnd, win32con.WM_QUIT, 0, 0)
def OnDrawItem(self, hwnd, msg, wparam, lparam):
fmt = "5i2P4iP"
data = struct.unpack(
fmt, win32gui.PyGetString(lparam, struct.calcsize(fmt)))
ctlType, ctlID, itemID, itemAction, itemState, hwndItem, \
hDC, left, top, right, bot, itemData = data
rect = left, top, right, bot
hicon, text = self.menu_item_map[itemData]
if text is None:
# This means the menu-item had HBMMENU_CALLBACK - so all we
# draw is the icon. rect is the entire area we should use.
win32gui.DrawIconEx(hDC, left, top, hicon, right - left, bot - top,
0, 0, win32con.DI_NORMAL)
else:
# If the user has selected the item, use the selected
# text and background colors to display the item.
selected = itemState & win32con.ODS_SELECTED
if selected:
crText = win32gui.SetTextColor(
hDC, win32gui.GetSysColor(win32con.COLOR_HIGHLIGHTTEXT))
crBkgnd = win32gui.SetBkColor(
hDC, win32gui.GetSysColor(win32con.COLOR_HIGHLIGHT))
each_pad = self.icon_x_pad // 2
x_icon = left + each_pad
x_text = x_icon + self.menu_icon_width + each_pad
# Draw text first, specifying a complete rect to fill - this sets
# up the background (but overwrites anything else already there!)
# Select the font, draw it, and restore the previous font.
hfontOld = win32gui.SelectObject(hDC, self.font_menu)
win32gui.ExtTextOut(hDC, x_text, top + 2, win32con.ETO_OPAQUE,
rect, text)
win32gui.SelectObject(hDC, hfontOld)
# Icon image next. Icons are transparent - no need to handle
# selection specially.
win32gui.DrawIconEx(hDC, x_icon, top + 2, hicon,
self.menu_icon_width, self.menu_icon_height, 0,
0, win32con.DI_NORMAL)
# Return the text and background colors to their
# normal state (not selected).
if selected:
win32gui.SetTextColor(hDC, crText)
win32gui.SetBkColor(hDC, crBkgnd)
def pointer_as_string(pointer, length=0):
"""Convert a WinAPI LPSTR to a Python string"""
return win32gui.PyGetString(pointer, length)
