frmscroll.frm

Visual Basic 6 大学教程的代码

VERSION 5.00
Begin VB.Form frmScrollbar 
   Caption         =   "Fig. 10.25: Scrollbars"
   ClientHeight    =   2895
   ClientLeft      =   2460
   ClientTop       =   2310
   ClientWidth     =   3765
   LinkTopic       =   "Form1"
   ScaleHeight     =   193
   ScaleMode       =   3  'Pixel
   ScaleWidth      =   251
   Begin VB.HScrollBar hsbScroll 
      Height          =   255
      Left            =   360
      TabIndex        =   2
      TabStop         =   0   'False
      Top             =   2400
      Width           =   2655
   End
   Begin VB.VScrollBar vsbScroll 
      Height          =   2175
      Left            =   3120
      TabIndex        =   1
      TabStop         =   0   'False
      Top             =   120
      Width           =   255
   End
   Begin VB.PictureBox picPicture 
      Height          =   2175
      Left            =   360
      ScaleHeight     =   141
      ScaleMode       =   3  'Pixel
      ScaleWidth      =   173
      TabIndex        =   0
      Top             =   120
      Width           =   2655
   End
End
Attribute VB_Name = "frmScrollbar"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
' Fig. 10.25
' Demonstrating Scrollbars
Option Explicit      ' General declarations

Private Sub Form_Load()
   ' Set maximum values for scrollbars
   hsbScroll.Max = picPicture.Width
   vsbScroll.Max = picPicture.Height
End Sub

Private Sub hsbScroll_Change()
   ' Turn pixel on when horizontal scrollbar value changes
   picPicture.PSet (hsbScroll.Value, vsbScroll.Value)
End Sub

Private Sub vsbScroll_Change()
   ' Turn pixel on when vertical scrollbar value changes
   picPicture.PSet (hsbScroll.Value, vsbScroll.Value)
End Sub

Private Sub hsbScoll_Scroll()
   picPicture.PSet (hsbScroll.Value, vsbScroll.Value)
End Sub

Private Sub vsbScroll_Scroll()
   picPicture.PSet (hsbScroll.Value, vsbScroll.Value)
End Sub