[RESOLVED] [1.0/1.1] disabling resize / restore button in a form

[drattansingh]

Hi. Is there any way to disable the resize / restore button in a sizeable form? I don't want to delete it, just disable it.

[sciguyryan]

Well, you can modify the code found here to use the following constants:

const int SC_MAXIMIZE = 0xF030;
const int SC_MINIMIZE = 0xF020;

Cheers,

Ryan Jones

[drattansingh]

Ok the following code disabled the close button:

private const int SC_CLOSE = 0xF060;
		private const int MF_GRAYED = 0x1;

		[DllImport("user32.dll")]
		private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);

		[DllImport("user32.dll")]
		private static extern int EnableMenuItem(IntPtr hMenu, int wIDEnableItem, int wEnable);

		private void Form1_Load(object sender, System.EventArgs e)
		{
			EnableMenuItem(GetSystemMenu(this.Handle, false), SC_CLOSE, MF_GRAYED);
		}

I tried appending to the following:

const int SC_MAXIMIZE = 0xF030;
const int SC_MINIMIZE = 0xF020;

		[DllImport("user32.dll")]
		private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);

		[DllImport("user32.dll")]
		private static extern int EnableMenuItem(IntPtr hMenu, int wIDEnableItem, int wEnable);

		private void Form1_Load(object sender, System.EventArgs e)
		{
			EnableMenuItem(GetSystemMenu(this.Handle, false), SC_MAXIMIZE, SC_MINIMIZE );
		}

I know I'm doing something wrong since it is not working, is anyone seeing what I'm diong wrong?

Jennifer

[drattansingh]

I found something that works.

this.MaximizeBox = false;

[sciguyryan]

Sorry, it should have been thisI think)

private const int MF_GRAYED = 0x1;
private const int SC_MAXIMIZE = 0xF030;
private const int SC_MINIMIZE = 0xF020;

[DllImport("user32.dll")]
private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);

[DllImport("user32.dll")]
private static extern int EnableMenuItem(IntPtr hMenu, int wIDEnableItem, int wEnable);

private void Form1_Load(object sender, System.EventArgs e)
{
    EnableMenuItem(GetSystemMenu(this.Handle, false), SC_MAXIMIZE, MF_GRAYED);
    EnableMenuItem(GetSystemMenu(this.Handle, false), SC_MINIMIZE, MF_GRAYED);
}

Cheers,

Ryan Jones

[penagate]

I found something that works.

this.MaximizeBox = false;

Ryan always makes things over complex

[drattansingh]

Ryan always makes things over complex

LOL. Complex is good I'm sure that I will have need to it sometime. Thanks again ryan. and also you too penegate

[jmcilhinney]

Just note that setting MaximizeBox to False is all well and good but if you set MinimizeBox to False as well then both the buttons will be removed altogether, not just disabled.