C# Signature:

[DllImport("user32.dll")]
static extern bool ValidateRect(IntPtr hWnd, ref RECT lpRect);

VB .NET Signature:

Public Declare Function ValidateRect Lib "User32" (ByVal hWnd As IntPtr, ByRef lpRect As RECT) As Boolean
Public Declare Function ValidateRect Lib "User32" (ByVal hWnd As IntPtr, ByRef lpRect As IntPtr) As Boolean
Public Shared Function ValidateRect(ByVal hWnd As IntPtr, ByVal lpRect As System.Drawing.Rectangle) As Boolean
     Return ValidateRect(hWnd, RECT.FromRectangle(lpRect))
End Function

User-Defined Types:

None.

Notes:

In the Win32 API, it is valid to specify a value of "NULL" to lpRect. I am not sure how or if you can specify null structure references using pInvoke in C#/.NET.

Tips & Tricks:

You can specify the lpRect param as null if you define your function as you can see bellow:

[DllImport("user32.dll")]
static extern bool ValidateRect(IntPtr hWnd, IntPtr lpRect);

Sample Code:

Please add some!

Alternative Managed API:

Do you know one? Please contribute it!

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).