C#: Hide Mouse & Disable Mouse input

person Jason Huangfolder_openC#, Codelocal_offer, , , access_time April 23, 2010

To disable mouse input & hide mouse cursor:
– In your Form Class, implement the interface IMessageFilter

Use the following code:

//in class header

public partial class FrmInputPrompt : Form, IMessageFilter

// method for iMessageFilter & methods for disable/enable mouse.

        bool IMessageFilter.PreFilterMessage(ref Message m)
            if (m.Msg == 0x201 || m.Msg == 0x202 || m.Msg == 0x203) return true;
            if (m.Msg == 0x204 || m.Msg == 0x205 || m.Msg == 0x206) return true;
            return false;
        public void EnableMouse()
            Cursor.Clip = OldRect;
        public void DisableMouse()
            OldRect = Cursor.Clip;
            // Arbitrary location.
            BoundRect = new Rectangle(50, 50, 1, 1);
            Cursor.Clip = BoundRect;


  1. Hi!!

    this not turn to Disable the mouse input, only disappears the cursor,

    //public static extern void BlockInput(bool fBlockIt);

    im using this but no luck yet

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