VB完成鼠標繪圖實例代碼。本站提示廣大學習愛好者:(VB完成鼠標繪圖實例代碼)文章只能為提供參考,不一定能成為您想要的結果。以下是VB完成鼠標繪圖實例代碼正文
本文所述為VB完成鼠標繪圖的實例,該實例完成線條顏色和線寬可自設,當按下鼠標按鍵時繪圖開端並記載最初的終點,假如不是處在繪圖形態則加入該進程,假如處在繪圖形態則從終點到目前鼠標所在點繪制直線,然後將以後鼠標所在點作為新的終點,當釋放鼠標按鍵時繪圖完畢。
詳細的功用代碼如下:
VERSION 5.00 Object = "{F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.2#0"; "comdlg32.ocx" Begin VB.Form Form1 Caption = "鼠標繪圖" ClientHeight = 6420 ClientLeft = 60 ClientTop = 345 ClientWidth = 7710 LinkTopic = "Form1" ScaleHeight = 6420 ScaleWidth = 7710 StartUpPosition = 3 '窗口缺省 Begin VB.CommandButton Command2 Caption = "肅清" Height = 495 Left = 5640 TabIndex = 7 Top = 1440 Width = 1335 End Begin VB.Frame Frame1 Caption = "線寬" Height = 2655 Left = 5520 TabIndex = 2 Top = 2880 Width = 1935 Begin VB.OptionButton Option4 Caption = "8" Height = 495 Left = 240 TabIndex = 6 Top = 1800 Width = 1215 End Begin VB.OptionButton Option3 Caption = "4" Height = 375 Left = 240 TabIndex = 5 Top = 1320 Width = 1335 End Begin VB.OptionButton Option2 Caption = "2" Height = 375 Left = 240 TabIndex = 4 Top = 840 Width = 1095 End Begin VB.OptionButton Option1 Caption = "1" Height = 255 Left = 240 TabIndex = 3 Top = 480 Value = -1 'True Width = 1335 End End Begin VB.CommandButton Command1 Caption = "設置顏色" Height = 495 Left = 5640 TabIndex = 1 Top = 600 Width = 1215 End Begin MSComDlg.CommonDialog CommonDialog1 Left = 4200 Top = 3840 _ExtentX = 847 _ExtentY = 847 _Version = 393216 End Begin VB.PictureBox Picture1 Height = 5535 Left = 480 ScaleHeight = 5475 ScaleWidth = 4515 TabIndex = 0 Top = 480 Width = 4575 End End Attribute VB_Name = "Form1" Attribute VB_GlobalNameSpace = False Attribute VB_Creatable = False Attribute VB_PredeclaredId = True Attribute VB_Exposed = False Dim x1 As Integer '終點X坐標 Dim y1 As Integer '終點Y坐標 Dim x2 As Integer '起點點X坐標 Dim y2 As Integer '起點Y坐標 Dim flag As Boolean '繪圖標志 '設置線的顏色 Private Sub Command1_Click() On Error Resume Next CommonDialog1.CancelError = True CommonDialog1.DialogTitle = "顏色" CommonDialog1.ShowColor If Err <> 32755 Then Picture1.ForeColor = CommonDialog1.Color End If End Sub '肅清Picture1中的圖形 Private Sub Command2_Click() Picture1.Cls End Sub '設置線寬 Private Sub Option1_Click() Picture1.DrawWidth = 1 End Sub Private Sub Option2_Click() Picture1.DrawWidth = 2 End Sub Private Sub Option3_Click() Picture1.DrawWidth = 4 End Sub Private Sub Option4_Click() Picture1.DrawWidth = 8 End Sub Private Sub Form_Load() Picture1.Scale (0, 0)-(400, 400) flag = False End Sub Private Sub Picture1_MouseDown(Button As Integer, Shift As Integer, _X As Single, Y As Single) '當按下鼠標按鍵時繪圖開端並記載最初的終點 flag = True x1 = X y1 = Y End Sub Private Sub Picture1_MouseMove(Button As Integer, Shift As Integer, _X As Single, Y As Single) '假如不是處在繪圖形態則加入該進程 '假如處在繪圖形態則從終點到目前鼠標所在點繪制直線 '然後將以後鼠標所在點作為新的終點 If flag = False Then Exit Sub End If If flag = True Then x2 = X y2 = Y Picture1.Line (x1, y1)-(x2, y2) x1 = x2 y1 = y2 End If End Sub Private Sub Picture1_MouseUp(Button As Integer, Shift As Integer, _X As Single, Y As Single) '當釋放鼠標按鍵時繪圖完畢 flag = False End Sub
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