C# Signature:

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

VB.Net Signature:

Please Add Some!

VB Signature:

Private Declare Function MessageBox Lib "user32.dll" Alias "MessageBoxA" (ByVal hWnd As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal uType As Long) As Long

Alternative Managed API:

System.Windows.Forms.MessageBox (WinForms)

System.Windows.MessageBox (WPF)

Notes:

https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-messagebox

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).