pinvoke.net: Edit: user32.getwindowplacement

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Summary: The GetWindowPlacement API

!!!!C# Signature:
 [DllImport("user32.dll", SetLastError = true)]
 [return: MarshalAs(UnmanagedType.Bool)]
 public static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);

!!!!VB.NET Signature:
 <DllImport("user32.dll")> _
 Private Shared Function GetWindowPlacement(ByVal hWnd As IntPtr, ByRef lpwndpl As WINDOWPLACEMENT) As Boolean
 End Function
!!!!VB Signature:
 Public Declare Function GetWindowPlacement Lib "user32" _
                  (ByVal hWnd As Long, _
                   ByRef lpwndpl As WINDOWPLACEMENT) As Long
!!!!User-Defined Types:
[WINDOWPLACEMENT]
[RECT]
[POINT]

[ShowState]

!!!!Notes:
The Win32 RECT structure is not compatible with the .NET System.Drawing.Rectangle structure.

The RECT structure has left, top, right, and bottom members but System.Drawing.Rectangle uses left, top, width, and height.

!!!!Tips & Tricks:
See [WINDOWPLACEMENT] for more info. Also read the MSDN documentation carefully.

!!!!C# Sample Code:

private void GetPlacement()
 {
 		WINDOWPLACEMENT placement = new WINDOWPLACEMENT();
 		placement.length = Marshal.SizeOf(placement);
 		GetWindowPlacement(this.Handle, ref placement);
 }

!!!!VB Sample Code:

Public Class Form1

Private Declare Function GetWindowPlacement Lib "user32" (ByVal hwnd As IntPtr, ByRef lpwndpl As WINDOWPLACEMENT) As Integer

Private Structure POINTAPI
                 Public x As Integer
                 Public y As Integer
    End Structure

Private Structure RECT
                 Public Left As Integer
                 Public Top As Integer
                 Public Right As Integer
                 Public Bottom As Integer
    End Structure

Private Structure WINDOWPLACEMENT
                 Public Length As Integer
                 Public flags As Integer
                 Public showCmd As Integer
                 Public ptMinPosition As POINTAPI
                 Public ptMaxPosition As POINTAPI
                 Public rcNormalPosition As RECT
    End Structure
 
 
    Private Sub Form1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click

Dim intRet As Integer
            Dim wpTemp As WINDOWPLACEMENT

wpTemp.Length = System.Runtime.InteropServices.Marshal.SizeOf(wpTemp)
            intRet = GetWindowPlacement(Me.Handle.ToInt32, wpTemp)

If wpTemp.showCmd = 1 Then
            	'normal
            ElseIf wpTemp.showCmd = 2 Then
            	'minimized
            ElseIf wpTemp.showCmd = 3 Then
            	'maximized
            End If
            'Stop

End Sub

End Class

!!!!Alternative Managed API:
The ManagedWindowsApi project (http://mwinapi.sourceforge.net) provides a 
class ManagedWinapi.SystemWindow that has a Position property.

Documentation: GetWindowPlacement@msdn on MSDN