private static void ChangeMenuItem(string oldLabel, string newLabel, bool enabled)
{
try
{
IntPtr hMenu = Win32.SendMessage(nppData._nppHandle, NppMsg.NPPM_GETMENUHANDLE, (int)NppMsg.NPPPLUGINMENU, 0);
//Try to find the Snip2Code menu
MenuItemInfoEnlarged s2cMenu = ManageMenu(hMenu, PluginName, "", true, true);
if (s2cMenu != null)
{
//in this Menu, find the item that matches the old label and change it:
ManageMenu(s2cMenu.mif.hSubMenu, oldLabel, newLabel, enabled, false);
}
}
catch (Exception e)
{
if (log != null)
{
log.ErrorFormat("Cannot change menu item {0} to {1} due to {2}", oldLabel.PrintNull(), newLabel.PrintNull(), e.Message);
}
}
}
private static MenuItemInfoEnlarged ManageMenu(IntPtr parentMenu, string oldMenuName, string newMenuName, bool enable, bool onlyRead)
{
if ((parentMenu.ToInt32() == 0) || string.IsNullOrEmpty(oldMenuName))
{
if (log != null)
{
log.WarnFormat("Cannot manage menu with parent={0} and oldMenuName={1}", parentMenu.ToInt32(), oldMenuName.PrintNull());
}
return(null);
}
for (int i = Win32.GetMenuItemCount(parentMenu) - 1; i >= 0; i--)
{
try
{
//guess the label of the menu in two steps:
//1. get the length of the string:
MENUITEMINFO mif = new MENUITEMINFO();
mif.fMask = Win32.MIIM_STRING | Win32.MIIM_SUBMENU | Win32.MIIM_ID;
mif.fType = Win32.MFT_STRING;
mif.dwTypeData = IntPtr.Zero;
bool res = Win32.GetMenuItemInfo(parentMenu, i, true, mif);
if (!res)
{
uint error = Win32.GetLastError(); //just for debug purpose
if (log != null)
{
log.WarnFormat("Cannot get menu info with parent={0} and # {1} due to error={2}", parentMenu.ToInt32(), i, error);
}
continue;
}
mif.cch++;
mif.dwTypeData = Marshal.AllocHGlobal((IntPtr)(mif.cch * 2));
//2. get the actual string:
try
{
res = Win32.GetMenuItemInfo(parentMenu, i, true, mif);
if (!res)
{
uint error = Win32.GetLastError(); //just for debug purpose
if (log != null)
{
log.WarnFormat("Cannot get menu info with parent={0} and # {1} due to error={2}", parentMenu.ToInt32(), i, error);
}
continue;
}
string caption = Marshal.PtrToStringUni(mif.dwTypeData);
if (caption.ToLowerInvariant().StartsWith(oldMenuName.ToLowerInvariant()))
{
if (!onlyRead && !string.IsNullOrEmpty(newMenuName))
{
mif.fMask = Win32.MIIM_STRING | Win32.MIIM_STATE;
if (enable)
{
mif.fState = Win32.MFS_ENABLED;
}
else
{
mif.fState = Win32.MFS_DISABLED;
}
mif.dwTypeData = Marshal.StringToHGlobalUni(newMenuName);
res = Win32.SetMenuItemInfo(parentMenu, i, true, mif);
if (res)
{
if (!Win32.DrawMenuBar(nppData._nppHandle))
{
uint error = Win32.GetLastError(); //just for debug purpose
if (log != null)
{
log.WarnFormat("Cannot draw menu info with parent={0} and # {1} due to error={2}; newManuName was:{3}",
parentMenu.ToInt32(), i, error, newMenuName.PrintNull());
}
continue;
}
}
else
{
uint error = Win32.GetLastError(); //just for debug purpose
if (log != null)
{
log.WarnFormat("Cannot get menu info with parent={0} and # {1} due to error={2}; newManuName was:{3}",
parentMenu.ToInt32(), i, error, newMenuName.PrintNull());
}
continue;
}
}
MenuItemInfoEnlarged result = new MenuItemInfoEnlarged();
result.mif = mif;
result.pos = i;
return(result);
}
}
finally
{
Marshal.FreeHGlobal(mif.dwTypeData);
}
}
catch { }
}
return(null);
}
