Problem in disabling close button(X) of window.

[priyamtheone]

Hi,
I am trying to work on an application that disables the close button (X) on the upper right hand corner of a window. In order to do that I need to use calls to API methods like GetSystemMenu, EnableMenuItem and RemoveMenu. I can figure out how these methods work but there are certain parameters that these methods have whose values that need to be passed to them as argument is unknown to me. How can I know them.

E.G.- for EnableMenuItem, the parameters are- hMenu (handle to the menu), uIDEnableItem (The menu item to be enabled, disabled, or grayed), uEnable (This parameter must be a combination of at least two of the following:
MF_BYCOMMAND or MF_BYPOSITION
MF_ENABLED, MF_DISABLED, or MF_GRAYED)

Now when I call this method from my application I supply the current window handle as the first argument, the item no. to be disabled/enabled as the second argument but I CAN'T UNDERSTAND WHAT TO SEND AS THE THIRD ARGUMENT. What exactly are the possible values for those parameters- MF_BYCOMMAND or MF_DISABLED. I checked certain examples where they are supplying hexadecimal values like &HF060, &H1, 0x400, 0x1000, 0x2 etc. or integer values like 1024, 2 etc. But how would I know what exactly these values are and when to use which value. The same problem arises in case of calling RemoveMenu method. If you know about any chart or tutorial that lists the values of these parameters then plz refer. Waiting for your help. Thanks.

[tlhintoq]

Aweful lot of work.

Easier to just handle the form closing event, check the reason or some parameter you setup and override the close if you want.

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
 
            MainLog.AddEntry("Main window closing");
            if (LoggedInUserName.Contains("tlhintoq"))
            {
                Application.Exit();
                return;
                // Check if it is me so I don't have to log in every time just to exit
            }
 
            // Check if user logged into this application has permission to exit
            if (Program.myPrivs.ExitApp)
            {
                DialogResult dlgResult = DialogResult.Yes;
                if (!Program.myPrivs.DisableWarnings)
                {
                    dlgResult = SmartDialog(30, "Are you sure you want to close?", "Please confirm", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
                    // A timed out dialog returns with 'ok' thus changing the dlgresult
                }
                if (dlgResult == DialogResult.Yes)
                {
                    notifyIcon1.Visible = false;
                    // No need to do more as we are already closing.
                    // We 'fall through' to exiting at this point.
                }
            }
            else
            {
                LackPrivs();
                e.Cancel = true;// Cancel the close;
            }
 
 
            #region If I want to 'close' to notify icon instead
            //        if (e.CloseReason == CloseReason.UserClosing || e.CloseReason == CloseReason.TaskManagerClosing)
            //{
            //    MainLog.AddEntry(string.Format("Hiding. ({0})",e.CloseReason));
            //    e.Cancel = true; // true that we are canceling the close event
            //    this.Hide(); // same as saying this.visible = false;
            //    //this.WindowState = FormWindowState.Minimized;
            //    //this.ShowInTaskbar = false;
            //    notifyIcon1.Visible = true;
            //}
            //else MainLog.AddEntry(string.Format("Closing. ({0})", e.CloseReason));
            //notifyIcon1.Visible = false;
 
            #endregion        
        }
 

[Plater]

I believe they wanted to affect some OTHER programs window?

[priyamtheone]

@tlhintoq
Thanks for your work but I can manage this part by myself. But I want to disable the Close button and the Close option from the window menu. For that u need to call the functions that i mentioned. I couldn't figure out the argument values that need to be passed to them. I'm exactle looking for those values somewhere. Thanks again for your help.