Imports guinet
Imports System.Runtime.InteropServices
Imports System.Windows.Forms

Public Class utilities

    ' interface to GuiXT
    Private myguixt As New guixt
    Private mysapwindow As NativeWindow

    Private Structure RECT
        Public Left As Int32
        Public Top As Int32
        Public Right As Int32
        Public Bottom As Int32
    End Structure

    Public Const SWP_NOMOVE As Short = &H2
    Public Const SWP_NOSIZE As Short = 1
    Public Const SWP_NOZORDER As Short = &H4
    Public Const SWP_SHOWWINDOW As Short = &H40

    Enum ShowWindowCommands As Integer
        Hide = 0
        Normal = 1
        ShowMinimized = 2
        Maximize = 3
        ShowMaximized = 3
        ShowNoActivate = 4
        Show = 5
        Minimize = 6
        ShowMinNoActive = 7
        ShowNA = 8
        Restore = 9
        ShowDefault = 10
        ForceMinimize = 11
    End Enum

    'MoveWindow changes window's top, left, width and height...
    '...even if it do not want to change their dimensions and haves fixed edges!
    
    Private Shared Function MoveWindow(hWnd As IntPtr, X As Integer, Y As Integer,
    nWidth As Integer, nHeight As Integer, bRepaint As Boolean) As Boolean
    End Function


    
    Private Shared Function ShowWindow(ByVal hwnd As IntPtr, ByVal nCmdShow As ShowWindowCommands) As Boolean
    End Function


    Private Declare Function GetWindowRect Lib "user32.dll" (
    ByVal hwnd As IntPtr,
    ByRef lpRect As RECT) As Int32

    ''' 

    ''' Set window position to bottom right of SAP GUI screen
    ''' 
    ''' The window handle
    ''' Errortext, if any 
    Public Function dock_bottom_right(ByVal hWnd As Long) As String

        Dim ret As String = ""
        Try

            If mysapwindow Is Nothing Then
                mysapwindow = myguixt.GuiWindow()
            End If

            ' Get the screen dimensions of sap gui window
            Dim r As New RECT
            GetWindowRect(mysapwindow.Handle, r)

            ' Get the screen dimensions of the given window
            ' (e.g. webview control)
            Dim r2 As New RECT
                    GetWindowRect(hWnd, r2)

            ' Set the window to the bottom right of the sap gui window
            MoveWindow(hWnd, r.Right - (r2.Right - r2.Left), r.Bottom - (r2.Bottom - r2.Top),
                r2.Right - r2.Left, r2.Bottom - r2.Top, True)

        Catch ex As Exception
            ret = ex.Message
        End Try

        Return ret

    End Function

    ''' 

    ''' Set window size, and position relative to sap gui window
    ''' 
    ''' The window handle
    ''' Width
    ''' Height 
    ''' Errortext, if any 
    Public Function set_window_dimensions(ByVal hWnd As Long, x As Integer, y As Integer, w As Integer, h As Integer) As String
        Dim ret As String = ""
        Try

            If Not myguixt.GuiWindow Is Nothing Then

                If mysapwindow Is Nothing Then
                    mysapwindow = myguixt.GuiWindow()
                End If

                ' Get the screen dimensions of sap gui window
                Dim r As New RECT
                GetWindowRect(mysapwindow.Handle, r)

                ' Get the screen dimensions of the given window
                ' (e.g. webview control)
                Dim r2 As New RECT
                GetWindowRect(hWnd, r2)

                MoveWindow(hWnd, r.Left + x, r.Top + y, w, h, True)

                'Window may be minimized by user -> restore
                ShowWindow(hWnd, ShowWindowCommands.Normal)

            End If

        Catch ex As Exception
            ret = ex.Message
        End Try
        Return ret

    End Function

    ''' 

    ''' Set window size, and position relative to sap gui window
    ''' 
    ''' The window handle
    ''' Width
    ''' Height 
    ''' Errortext, if any 
    Public Function set_window_size(ByVal hWnd As Long, w As Integer, h As Integer) As String

        Dim ret As String = ""
        Try
            ' Get the screen dimensions of the given window
            ' (e.g. webview control)
            Dim r2 As New RECT
            GetWindowRect(hWnd, r2)
            MoveWindow(hWnd, r2.Left, r2.Top, w, h, True)

            'Window may be minimized by user -> restore
            ShowWindow(hWnd, ShowWindowCommands.Normal)

        Catch ex As Exception
            ret = ex.Message
        End Try

        Return ret

    End Function



End Class