[pywin32-checkins] pywin32/win32/Demos win32gui_menu.py,1.2,1.3
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[pywin32-checkins] pywin32/win32/Demos win32gui_menu.py,1.2,1.3
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From: Mark H. <mha...@us...> - 2006-07-02 06:46:40
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Update of /cvsroot/pywin32/pywin32/win32/Demos In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv8468 Modified Files: win32gui_menu.py Log Message: demo of owner-drawn menus. Index: win32gui_menu.py =================================================================== RCS file: /cvsroot/pywin32/pywin32/win32/Demos/win32gui_menu.py,v retrieving revision 1.2 retrieving revision 1.3 diff -C2 -d -r1.2 -r1.3 *** win32gui_menu.py 7 Sep 2004 02:05:36 -0000 1.2 --- win32gui_menu.py 2 Jul 2006 06:46:36 -0000 1.3 *************** *** 29,32 **** --- 29,35 ---- win32con.WM_COMMAND: self.OnCommand, win32con.WM_USER+20 : self.OnTaskbarNotify, + # owner-draw related handlers. + win32con.WM_MEASUREITEM: self.OnMeasureItem, + win32con.WM_DRAWITEM: self.OnDrawItem, } # Register the Window class. *************** *** 54,58 **** --- 57,76 ---- hicon = LoadIcon(0, win32con.IDI_APPLICATION) self.iconPathName = iconPathName + + # Load up some information about menus needed by our owner-draw code. + # The font to use on the menu. + ncm = SystemParametersInfo(win32con.SPI_GETNONCLIENTMETRICS) + self.font_menu = CreateFontIndirect(ncm['lfMenuFont']) + # spacing for our ownerdraw menus - not sure exactly what constants + # should be used (and if you owner-draw all items on the menu, it + # doesn't matter!) + self.menu_icon_height = GetSystemMetrics(win32con.SM_CYMENU) - 4 + self.menu_icon_width = self.menu_icon_height + self.icon_x_pad = 8 # space from end of icon to start of text. + # A map we use to stash away data we need for ownerdraw. Keyed + # by integer ID - that ID will be set in dwTypeData of the menu item. + self.menu_item_map = {} + # Finally, create the menu self.createMenu() *************** *** 87,93 **** InsertMenuItem(menu, 0, 1, item) ! # Create one with an icon - this is a fair bit more work, as we need ! # to convert the icon to a bitmap. ! # First load the icon. ico_x = GetSystemMetrics(win32con.SM_CXSMICON) ico_y = GetSystemMetrics(win32con.SM_CYSMICON) --- 105,118 ---- InsertMenuItem(menu, 0, 1, item) ! # Owner-draw menus mainly from: ! # http://windowssdk.msdn.microsoft.com/en-us/library/ms647558.aspx ! # and: ! # http://www.codeguru.com/cpp/controls/menu/bitmappedmenus/article.php/c165 ! ! # Create one with an icon - this is *lots* more work - we do it ! # owner-draw! The primary reason is to handle transparency better - ! # converting to a bitmap causes the background to be incorrect when ! # the menu item is selected. I can't see a simpler way. ! # First, load the icon we want to use. ico_x = GetSystemMetrics(win32con.SM_CXSMICON) ico_y = GetSystemMetrics(win32con.SM_CYSMICON) *************** *** 100,120 **** DestroyIcon(large[0]) ! hdcBitmap = CreateCompatibleDC(0) ! hdcScreen = GetDC(0) ! hbm = CreateCompatibleBitmap(hdcScreen, ico_x, ico_y) ! hbmOld = SelectObject(hdcBitmap, hbm) ! # Fill the background. ! brush = GetSysColorBrush(win32con.COLOR_MENU) ! FillRect(hdcBitmap, (0, 0, 16, 16), brush) ! # unclear if brush needs to be feed. Best clue I can find is: ! # "GetSysColorBrush returns a cached brush instead of allocating a new ! # one." - implies no DeleteObject ! # draw the icon ! DrawIconEx(hdcBitmap, 0, 0, hicon, ico_x, ico_y, 0, 0, win32con.DI_NORMAL) ! SelectObject(hdcBitmap, hbmOld) ! DeleteDC(hdcBitmap) ! ! item, extras = PackMENUITEMINFO(text="Menu with icon", ! hbmpItem=hbm, wID=1009) InsertMenuItem(menu, 0, 1, item) --- 125,134 ---- DestroyIcon(large[0]) ! # Stash away the text and hicon in our map, and add the owner-draw ! # item to the menu. ! index = 0 ! self.menu_item_map[index] = (hicon, "Menu with icon") ! item, extras = PackMENUITEMINFO(fType=win32con.MFT_OWNERDRAW, ! dwTypeData=index, wID=1009) InsertMenuItem(menu, 0, 1, item) *************** *** 149,153 **** # Set 'Exit' as the default option. SetMenuDefaultItem(menu, 1000, 0) ! def OnDestroy(self, hwnd, msg, wparam, lparam): nid = (self.hwnd, 0) --- 163,190 ---- # Set 'Exit' as the default option. SetMenuDefaultItem(menu, 1000, 0) ! ! # For reference: old code that converted icon to bitmap (but that ! # code left an ugly background on the icons when the item was selected) ! """ ! hdcBitmap = CreateCompatibleDC(0) ! hdcScreen = GetDC(0) ! hbm = CreateCompatibleBitmap(hdcScreen, ico_x, ico_y) ! hbmOld = SelectObject(hdcBitmap, hbm) ! SetBkMode(hdcBitmap, win32con.TRANSPARENT) ! # Fill the background. ! brush = GetSysColorBrush(win32con.COLOR_MENU) ! FillRect(hdcBitmap, (0, 0, 16, 16), brush) ! # unclear if brush needs to be freed. Best clue I can find is: ! # "GetSysColorBrush returns a cached brush instead of allocating a new ! # one." - implies no DeleteObject. ! # draw the icon ! DrawIconEx(hdcBitmap, 0, 0, hicon, ico_x, ico_y, 0, 0, win32con.DI_NORMAL) ! SelectObject(hdcBitmap, hbmOld) ! DeleteDC(hdcBitmap) ! item, extras = PackMENUITEMINFO(text="Menu with icon", ! hbmpItem=hbm, ! wID=1009) ! """ ! def OnDestroy(self, hwnd, msg, wparam, lparam): nid = (self.hwnd, 0) *************** *** 175,181 **** def OnCommand(self, hwnd, msg, wparam, lparam): id = LOWORD(wparam) - print "OnCommand for control ID", id - def OnCommand(self, hwnd, msg, wparam, lparam): - id = LOWORD(wparam) if id == 1000: print "Goodbye" --- 212,215 ---- *************** *** 208,211 **** --- 242,308 ---- print "OnCommand for ID", id + # Owner-draw related functions. We only have 1 owner-draw item, but + # we pretend we have more than that :) + def OnMeasureItem(self, hwnd, msg, wparam, lparam): + fmt = "6i" + buf = PyMakeBuffer(struct.calcsize(fmt), lparam) + data = struct.unpack(fmt, buf) + ctlType, ctlID, itemID, itemWidth, itemHeight, itemData = data + + hicon, text = self.menu_item_map[itemData] + dc = GetDC(hwnd) + oldFont = SelectObject(dc, self.font_menu) + cx, cy = GetTextExtentPoint32(dc, text) + SelectObject(dc, oldFont) + ReleaseDC(hwnd, dc) + + cx += GetSystemMetrics(win32con.SM_CXMENUCHECK) + cx += self.menu_icon_width + self.icon_x_pad + + cy = GetSystemMetrics(win32con.SM_CYMENU) + new_data = struct.pack(fmt, ctlType, ctlID, itemID, cx, cy, itemData) + PySetMemory(lparam, new_data) + return True + + def OnDrawItem(self, hwnd, msg, wparam, lparam): + fmt = "12i" + data = struct.unpack(fmt, 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 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 = SetTextColor(hDC, GetSysColor(win32con.COLOR_HIGHLIGHTTEXT)) + crBkgnd = SetBkColor(hDC, GetSysColor(win32con.COLOR_HIGHLIGHT)) + + each_pad = self.icon_x_pad / 2 + x_icon = left + GetSystemMetrics(win32con.SM_CXMENUCHECK) + 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 = SelectObject(hDC, self.font_menu) + ExtTextOut(hDC, x_text, top+2, win32con.ETO_OPAQUE, rect, text) + SelectObject(hDC, hfontOld) + + # Icon image next. Icons are transparent - no need to handle + # selection specially. + 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: + SetTextColor(hDC, crText) + SetBkColor(hDC, crBkgnd) + + def main(): w=MainWindow() |
