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WinExpert9.iso
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VisualBasic
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Vb08
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frmDoodler.frm
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Visual Basic Form
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1998-07-13
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7KB
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198 lines
VERSION 5.00
Begin VB.Form frmDoodler
BorderStyle = 1 'Fixed Single
Caption = "Doodler"
ClientHeight = 4725
ClientLeft = 150
ClientTop = 720
ClientWidth = 7725
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 4725
ScaleWidth = 7725
StartUpPosition = 3 'Windows Default
Begin VB.PictureBox picDrawingArea
AutoRedraw = -1 'True
BackColor = &H00FFFFFF&
Height = 4215
Left = 2160
ScaleHeight = 4155
ScaleWidth = 5355
TabIndex = 5
Top = 360
Width = 5415
End
Begin VB.ListBox lstColours
Height = 1230
Left = 120
TabIndex = 4
Top = 3360
Width = 1935
End
Begin VB.CheckBox chkContinuousDrawing
Caption = "Continuous Drawing"
Height = 255
Left = 120
TabIndex = 2
Top = 2760
Width = 1935
End
Begin VB.CommandButton cmdClear
Caption = "Clear"
Height = 375
Left = 120
TabIndex = 1
Top = 2280
Width = 1935
End
Begin VB.Frame fraShape
Caption = "Shape"
Height = 2055
Left = 120
TabIndex = 0
Top = 120
Width = 1935
Begin VB.OptionButton optShape
Caption = "Vertical Line"
Height = 255
Index = 3
Left = 240
TabIndex = 10
Top = 1560
Width = 1455
End
Begin VB.OptionButton optShape
Caption = "Horizontal Line"
Height = 255
Index = 2
Left = 240
TabIndex = 9
Top = 1200
Width = 1455
End
Begin VB.OptionButton optShape
Caption = "Square"
Height = 255
Index = 1
Left = 240
TabIndex = 8
Top = 840
Width = 1455
End
Begin VB.OptionButton optShape
Caption = "Circle"
Height = 255
Index = 0
Left = 240
TabIndex = 7
Top = 480
Width = 1455
End
End
Begin VB.Label Label2
Caption = "Drawing Area"
Height = 255
Left = 2160
TabIndex = 6
Top = 120
Width = 1935
End
Begin VB.Label Label1
Caption = "Colour"
Height = 255
Left = 120
TabIndex = 3
Top = 3120
Width = 1935
End
Begin VB.Menu mnuFile
Caption = "&File"
Begin VB.Menu mnuFileOpen
Caption = "&Open..."
End
End
Attribute VB_Name = "frmDoodler"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private mlngChosenShape As Long
Private Sub cmdClear_Click()
picDrawingArea.Cls
End Sub
Private Sub Form_Load()
With lstColours
.AddItem "Black"
.ItemData(.NewIndex) = RGB(0, 0, 0)
.AddItem "Red"
.ItemData(.NewIndex) = RGB(255, 0, 0)
.AddItem "Green"
.ItemData(.NewIndex) = RGB(0, 255, 0)
.AddItem "Blue"
.ItemData(.NewIndex) = RGB(0, 0, 255)
.AddItem "Yellow"
.ItemData(.NewIndex) = RGB(255, 255, 0)
.AddItem "Cyan"
.ItemData(.NewIndex) = RGB(0, 255, 255)
.AddItem "Magenta"
.ItemData(.NewIndex) = RGB(255, 0, 255)
.AddItem "White"
.ItemData(.NewIndex) = RGB(255, 255, 255)
.ListIndex = 0
End With
optShape(0).Value = True
End Sub
Private Sub mnuFileOpen_Click()
Call mDoOpen
End Sub
Private Sub optShape_Click(Index As Integer)
mlngChosenShape = Index
End Sub
Private Sub picDrawingArea_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Call mDrawShape(X, Y)
End Sub
Private Sub picDrawingArea_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button = vbLeftButton And chkContinuousDrawing = vbChecked Then
Call mDrawShape(X, Y)
End If
End Sub
Private Sub mDrawShape(X As Single, Y As Single)
Dim lngColour As Long
lngColour = lstColours.ItemData(lstColours.ListIndex)
Select Case optShape(mlngChosenShape).Caption
Case "Circle"
picDrawingArea.Circle (X, Y), 300, lngColour
Case "Square"
picDrawingArea.Line (X - 300, Y - 300)-(X + 300, Y + 300), lngColour, B
Case "Horizontal Line"
picDrawingArea.Line (X - 300, Y)-(X + 300, Y), lngColour
Case "Vertical Line"
picDrawingArea.Line (X, Y - 300)-(X, Y + 300), lngColour
Case Else
MsgBox "Encountered unexpected shape """ & optShape(mlngChosenShape).Caption & """", vbExclamation, "Warning"
End Select
End Sub
Private Sub mDoOpen()
Dim strFileName As String
TryAgain:
strFileName = InputBox("Please enter the name of an image to load:", "Open")
If strFileName <> "" Then
On Error GoTo TellUser
picDrawingArea.Picture = LoadPicture(strFileName)
End If
Exit Sub
TellUser:
Dim lngResult As Long
lngResult = MsgBox("Unable to open the file specified." & vbCrLf & _
"Reason - " & Err.Description & vbCrLf & _
"Do you want to try another file?", vbExclamation + _
vbYesNo, "Open Failed")
If lngResult = vbYes Then
Resume TryAgain
End If
End Sub