C# Signature (New)

     [DllImport("user32.dll",CharSet=CharSet.Auto)]
      public static extern int MessageBox(IntPtr hWnd,String text,String caption,
       MessageBoxStyles style);

C# Definition of MessageBoxStyles

    /// MessageBoxStyles Structure
    /// By Gabriel T. Sharp [osirisgothra@hotmail.com]
    /// Use one or more of the following combined with bitwise-or operator
    [Flags()]
    public enum MessageBoxStyles:uint
    {
        ok=0x00000000U,      
        okCancel=0x00000001U,      
        abortretryignore=0x00000002U,      
        yesnocancel=0x00000003U,      
        yesno=0x00000004U,      
        retrycancel=0x00000005U,      
        iconhand=0x00000010U,      
        iconquestion=0x00000020U,      
        iconexclamation=0x00000030U,      
        iconasterisk=0x00000040U,      
        defbutton1=0x00000000U,      
        defbutton2=0x00000100U,      
        defbutton3=0x00000200U,      
        defbutton4=0x00000300U,      
        applmodal=0x00000000U,      
        systemmodal=0x00001000U,      
        taskmodal=0x00002000U,      
        help=0x00004000U,
        nofocus=0x00008000U,      
        setforeground=0x00010000U,      
        default_desktop_only=0x00020000U,      
        topmost=0x00040000U,      
        right=0x00080000U,      
        rtlreading=0x00100000U
    }

C# Signature (Original):

[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern uint MessageBox(IntPtr hWnd, String text, String caption, uint type);

VB Signature:

Imports System.Runtime.InteropServices
<DllImport("user32.dll", CharSet:=CharSet.Auto)> _
Shared Function MessageBox(ByVal hwnd As IntPtr, ByVal t As String, ByVal caption As String, ByVal t2 As UInt32) As Integer
End Function

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Input something

Sample Code C#:

    using System;
    using System.Runtime.InteropServices;    

    class Class1
    {
        [DllImport("user32.dll", CharSet=CharSet.Auto)]
        public static extern int MessageBox(IntPtr hWnd, String text, String caption,
            uint type);

        [STAThread]
        static void Main(string[] args)
        {
            Class1.MessageBox(new IntPtr(0), "Text", "Caption", 0 );
        }
    }

Sample Code VB:

        MessageBox(New IntPtr(0), "Text", "Caption", Convert.ToUInt32(MessageBoxButtons.OK))

}

Alternative Managed API:

System.Windows.Forms.MessageBox.Show

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