form0805.frm

VB实验教程源码

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "反转图片"
   ClientHeight    =   2655
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4845
   ScaleHeight     =   2655
   ScaleWidth      =   4845
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "反转图片"
      Height          =   375
      Left            =   2880
      TabIndex        =   3
      Top             =   1920
      Width           =   1095
   End
   Begin VB.PictureBox Picture2 
      Height          =   855
      Left            =   2880
      ScaleHeight     =   53
      ScaleMode       =   3  'Pixel
      ScaleWidth      =   77
      TabIndex        =   2
      Top             =   480
      Width           =   1215
   End
   Begin VB.PictureBox Picture1 
      Height          =   855
      Left            =   840
      Picture         =   "Form0805.frx":0000
      ScaleHeight     =   53
      ScaleMode       =   3  'Pixel
      ScaleWidth      =   77
      TabIndex        =   1
      Top             =   480
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "扫描图片"
      Height          =   375
      Left            =   840
      TabIndex        =   0
      Top             =   1920
      Width           =   1095
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

'定义一个ImageP三维数组
Dim ImageP() As Integer

Private Sub Command1_Click()
' 扫描图形，对装载入Picture1的原图进行扫描读取每个像素，存放在ImageP数组中。
        Dim i As Integer, j As Integer
        Dim Red As Integer, Green As Integer, Blue As Integer
        Dim Col As Long
        Dim x As Integer, y As Integer
        Form1.MousePointer = 11 '设置鼠标为沙漏形状
        x = Picture1.Width
        y = Picture1.Height
        '按图片框的大小重新定义数组
        ReDim ImageP(2, x, y)
        Picture1.AutoRedraw = True
        For j = 0 To Picture1.Height - 1
            For i = 0 To Picture1.Width - 1
                    Col = Form1.Picture1.Point(i, j)
                    Red = Col& And &HFF
                    Green = ((Col& And &HFF00) \ 256) Mod 256
                    Blue = (Col& And &HFF0000) \ 65536
                    ImageP(0, i, j) = Red
                    ImageP(1, i, j) = Green
                    ImageP(2, i, j) = Blue
            Next
        Next
        Form1.MousePointer = 0
End Sub

Private Sub Command2_Click()
'单击反转图片按钮
        Dim i, j As Integer
        Dim Red, Green, Blue As Integer
        Form1.MousePointer = 11
        For j = 0 To Picture2.Height - 1
            For i = 0 To Picture2.Width - 1
                Red = 255 - ImageP(0, i, j)
                Green = 255 - ImageP(1, i, j)
                Blue = 255 - ImageP(2, i, j)
                Picture2.PSet (i, j), RGB(Red, Green, Blue)
            Next
        Next
        Form1.MousePointer = 0
End Sub