Visual Basic Source Code/Visual Basic Source Code.iso/vbsource/popupre/mdiparen.frm

Text File | 1995-03-03 | 6KB | 174 lines

VERSION 2.00
Begin MDIForm frmMDIParent
   Caption         =   "MDI Parent"
   ClientHeight    =   3660
   ClientLeft      =   75
   ClientTop       =   1905
   ClientWidth     =   9405
   Height          =   4065
   Left            =   15
   Top             =   1560
   Width           =   9525
   WindowState     =   2  'Maximized
   Begin PictureBox picToolBar
      Align           =   1  'Align Top
      BackColor       =   &H00E0E0E0&
      BorderStyle     =   0  'None
      FillColor       =   &H00808080&
      ForeColor       =   &H00808080&
      Height          =   3090
      Left            =   0
      ScaleHeight     =   3090
      ScaleWidth      =   9405
      TabIndex        =   0
      Top             =   0
      Width           =   9405
      Begin Label Label3
         BackStyle       =   0  'Transparent
         Caption         =   "2.   Close the MDI child window, press the MDI parent image button again and select the popup menu entry 'Show Modal Child Window'. A modal child window similar to the previously opened MDI child window comes up. But if you press its image button which should pop up the same menu as in the MDI child window, no popup menu appears. This happens because of the non-reentrancy of the code of the container window."
         FontBold        =   0   'False
         FontItalic      =   0   'False
         FontName        =   "MS Sans Serif"
         FontSize        =   8.25
         FontStrikethru  =   0   'False
         FontUnderline   =   0   'False
         ForeColor       =   &H00FF0000&
         Height          =   840
         Left            =   585
         TabIndex        =   4
         Top             =   2130
         Width           =   8205
      End
      Begin Label Label2
         BackStyle       =   0  'Transparent
         Caption         =   "1.   Click on the 'Show MDI Child Window' entry of the popup menu. A MDI child window will open hat also contains an image button with a popup menu. This popup menu is also defined on the hidden container form. If you click on the image button, the popup menu appears. So far, so good."
         FontBold        =   0   'False
         FontItalic      =   0   'False
         FontName        =   "MS Sans Serif"
         FontSize        =   8.25
         FontStrikethru  =   0   'False
         FontUnderline   =   0   'False
         ForeColor       =   &H00FF0000&
         Height          =   675
         Left            =   585
         TabIndex        =   3
         Top             =   1395
         Width           =   8205
      End
      Begin Label Label1
         BackStyle       =   0  'Transparent
         Caption         =   "The 'MouseDown' event of this image button pops up a menu that is defined on a hidden form (frmMenuContainer)."
         FontBold        =   0   'False
         FontItalic      =   0   'False
         FontName        =   "MS Sans Serif"
         FontSize        =   8.25
         FontStrikethru  =   0   'False
         FontUnderline   =   0   'False
         ForeColor       =   &H00FF0000&
         Height          =   360
         Left            =   585
         TabIndex        =   2
         Top             =   1065
         Width           =   8205
      End
      Begin Label lblMenuClick
         BackColor       =   &H000000FF&
         ForeColor       =   &H000000FF&
         Height          =   225
         Left            =   8940
         TabIndex        =   1
         Top             =   810
         Visible         =   0   'False
         Width           =   285
      End
      Begin Image imgButtonUp
         Height          =   330
         Left            =   8895
         Picture         =   MDIPAREN.FRX:0000
         Top             =   45
         Visible         =   0   'False
         Width           =   360
      End
      Begin Image imgButtonDown
         Height          =   330
         Left            =   8895
         Picture         =   MDIPAREN.FRX:0182
         Top             =   390
         Visible         =   0   'False
         Width           =   360
      End
      Begin Image imgPopUp
         Height          =   330
         Left            =   4380
         Top             =   135
         Width           =   360
      End
   End
End
Option Explicit

Sub HandleMyPopUp (P_nIndex As Integer)
' This sub handles the clicks on the menu entries of the
' MDI parent popup menu received by lblMenuClick from frmMenuContainer

    Select Case P_nIndex
    Case 0:
        ' Show MDI child window
        frmMDIChild.Show

    Case 1:
        ' Show modal child window
        frmModalChild.Show 1

    Case 3:
        ' Exit
        End

    End Select

End Sub

Sub imgPopUp_MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single)

    ' Show 'button down' image
    imgPopUp = imgButtonDown

    ' Pop up the MDI parent menu defined in frmMenuContainer
    PopupMenu frmMenuContainer.mnuPopUpMDIParent, 0

    ' Show 'button up' image
    imgPopUp = imgButtonUp

End Sub

Sub lblMenuClick_Change ()
' The 'Change' event of this label is triggered when a click on
' a menu entry in frmMenuContainer sets the label caption with the
' related menu entry index

    ' Handle the menu click if an index is available
    If lblMenuClick <> "" Then HandleMyPopUp Val(lblMenuClick)

    ' Reset the label for new menu entry clicks
    lblMenuClick = ""

End Sub

Sub MDIForm_Load ()

    ' Startup: Load the hidden menu container form
    Load frmMenuContainer

    ' Show 'button up' image initially
    imgPopUp = imgButtonUp

End Sub

Sub MDIForm_QueryUnload (Cancel As Integer, UnloadMode As Integer)

    ' Ends the app when the system menu is used
    End

End Sub