> Graph a Workflow Example (VB.NET)

Graph a Workflow Example (VB.NET)

This example shows how to graph a workflow.

NOTE: If using the .NET Framework 4.0 primary interop assembly provided with SolidWorks Enterprise PDM, see Using .NET Framework 4.0 in Stand-alone Applications.

'----------------------------------------------------------------------------
' Preconditions:
' 1. Start Microsoft Visual Studio 2010.
'    a. Click File > New > Project > Visual Basic > Windows Forms Application.
'    b. Type PaintWorkflowGraph in Name.
'    c. Click Browse and navigate to the folder where to create
'       the project.
'    d. Click OK.
'    e. Click Show All Files in the Solution Explorer toolbar and expand
'       Form1.vb in the Solution Explorer.
'    f. Replace the code in Form1.vb with this code.
'    g. To create the form, replace the code in Form1.Designer.vb with this code.
' 2. Add EPDM.Interop.epdm.dll as a reference (right-click the project
'    name in the Solution Explorer, click Add Reference, click
'    Assemblies > Framework in the left-side panel, browse to the top folder of
'    your SolidWorks Enterprise PDM installation, locate and click
'    EPDM.Interop.epdm.dll, click Open, click Add, and click Close).
' 3. Right-click EPDM.Interop.epdm in References, click Properties, and set
'    Embed Interop Types to False to handle methods that pass arrays of
'    structures.
' 4. Click Debug > Start Debugging or press F5.
'
' Postconditions:
' 1. Displays the Graph a workflow dialog box.
' 2. Maximize the dialog box for the workflow graph.
' 3. Select a vault view.
' 4. Click a workflow.
' 5. Click Graph workflow.
' 6. Graphs the selected workflow in the dialog box.
' 7. Close the Graph a workflow dialog box.
'----------------------------------------------------------------------------

'Form1.vb

Imports System.IO
Imports System.Xml.Serialization
Imports System.Collections
Imports System.Collections.Generic
Imports System.Data
Imports System.Diagnostics
Imports System.Windows.Forms
Imports System.ComponentModel
Imports EPDM.Interop.epdm

Public Class Form1

    Private vault1 As IEdmVault5 = Nothing
    Dim wf As IEdmWorkflow6
    Dim wfmgr As IEdmWorkflowMgr6
    Dim pos As IEdmPos5

    Public Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Try
            vault1 = New EdmVault5()
            Dim vault As IEdmVault8 = DirectCast(vault1, IEdmVault8)
            Dim Views As EdmViewInfo() = Nothing

            vault.GetVaultViews(Views, False)
            VaultsComboBox.Items.Clear()
            For Each View As EdmViewInfo In Views
                VaultsComboBox.Items.Add(View.mbsVaultName)
            Next
            If VaultsComboBox.Items.Count > 0 Then
                VaultsComboBox.Text = DirectCast(VaultsComboBox.Items(0), String)
            End If

        Catch ex As System.Runtime.InteropServices.COMException
            MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message)
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
    End Sub

    Public Sub GraphWorkflow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GraphWorkflow.Click
        'Graph workflow
        Try
            Dim vault2 As IEdmVault7
            If vault1 Is Nothing Then
                vault1 = New EdmVault5()
            End If

            vault2 = vault1
            If Not vault1.IsLoggedIn Then
                vault1.LoginAuto(VaultsComboBox.Text, Me.Handle.ToInt32())
            End If

            'Retrieve the graphics interface of this window
            Dim gfx As System.Drawing.Graphics
            gfx = Me.CreateGraphics()
            gfx.Clear(Color.AliceBlue)

            'Create font with which to draw text
            Dim font As System.Drawing.Font
            font = New System.Drawing.Font("Arial", 10, FontStyle.Bold)

            'Loop over all the workflows to find the selected workflow
            pos = wfmgr.GetFirstWorkflowPosition()
            While Not pos.IsNull
                wf = wfmgr.GetNextWorkflow(pos)
                If (wf.Name = ListBox1.SelectedItem.ToString) Then

                    'Loop over all workflow transitions
                    Dim pos As IEdmPos5
                    pos = wf.GetFirstTransitionPosition
                    While Not pos.IsNull
                        Dim trans As IEdmTransition7
                        trans = wf.GetNextTransition(pos)

                        'Draw the arrow of the transition
                        Dim vertices() As EdmPoint
                        vertices = Nothing
                        trans.GetArrowVertices(vertices)
                        PaintArrow(gfx, vertices)

                        'Get the transition box
                        Dim transRect As EdmRect
                        trans.GetRect(transRect)
                        Dim rectF As System.Drawing.RectangleF
                        rectF.X = transRect.mlLeft
                        rectF.Y = transRect.mlTop
                        rectF.Width = transRect.mlRight - transRect.mlLeft
                        rectF.Height = transRect.mlBottom - transRect.mlTop

                        'Draw the transition box
                        gfx.FillRectangle(Brushes.LightYellow, rectF)
                        gfx.DrawRectangle(Pens.Black, rectF.X, rectF.Y, rectF.Width, rectF.Height)
                        gfx.DrawString(trans.Name, font, Brushes.Black, rectF)
                    End While

                    'Loop over all workflow states
                    pos = wf.GetFirstStatePosition
                    While Not pos.IsNull
                        Dim state As IEdmState7
                        state = wf.GetNextState(pos)

                        'Get the state box
                        Dim stateRect As EdmRect
                        state.GetRect(stateRect)
                        Dim rectF As System.Drawing.RectangleF
                        rectF.X = stateRect.mlLeft
                        rectF.Y = stateRect.mlTop
                        rectF.Width = stateRect.mlRight - stateRect.mlLeft
                        rectF.Height = stateRect.mlBottom - stateRect.mlTop

                        'Draw the state box
                        gfx.FillRectangle(Brushes.Azure, rectF)
                        gfx.DrawRectangle(Pens.Black, rectF.X, rectF.Y, rectF.Width, rectF.Height)
                        gfx.DrawString(state.Name, font, Brushes.Black, rectF)
                    End While
                End If
            End While
        Catch ex As System.Runtime.InteropServices.COMException
            MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message)
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try

    End Sub

    'Draw the arrow of a transition
    Private Sub PaintArrow(ByVal gfx As System.Drawing.Graphics, ByVal vertices() As EdmPoint)
        Try
            Dim points(UBound(vertices)) As System.Drawing.PointF
            Dim i As Integer
            i = LBound(vertices)
            While i <= UBound(vertices)
                points(i).X = vertices(i).mlX
                points(i).Y = vertices(i).mlY
                i = i + 1
            End While

            'Draw the arrow lines
            gfx.DrawLines(Pens.DarkRed, points)

        Catch ex As System.Runtime.InteropServices.COMException
            MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message)
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
    End Sub

    Private Sub VaultsComboBox_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles VaultsComboBox.SelectedIndexChanged
        Try
            vault1 = New EdmVault5()
            Dim vault As IEdmVault8 = DirectCast(vault1, IEdmVault8)

            If Not vault1.IsLoggedIn Then
                vault1.LoginAuto(VaultsComboBox.Text, Me.Handle.ToInt32())
            End If

            ListBox1.Items.Clear()

            wfmgr = vault.CreateUtility(EdmUtility.EdmUtil_WorkflowMgr)
            pos = wfmgr.GetFirstWorkflowPosition()
            While Not pos.IsNull
                wf = wfmgr.GetNextWorkflow(pos)
                ListBox1.Items.Add(wf.Name)
            End While

        Catch ex As System.Runtime.InteropServices.COMException
            MessageBox.Show("HRESULT = 0x" + ex.ErrorCode.ToString("X") + " " + ex.Message)
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
    End Sub
End Class

'Form1.Designer.vb

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    ''' <summary>
    ''' Required designer variable.
    ''' </summary>
    Private components As System.ComponentModel.IContainer = Nothing

    ''' <summary>
    ''' Clean up any resources being used.
    ''' </summary>
    ''' <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso (components IsNot Nothing) Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub

#Region "Windows Form Designer generated code"

    ''' <summary>
    ''' Required method for Designer support - do not modify
    ''' the contents of this method with the code editor.
    ''' </summary>
    Private Sub InitializeComponent()
        Me.VaultsLabel = New System.Windows.Forms.Label()
        Me.VaultsComboBox = New System.Windows.Forms.ComboBox()
        Me.GraphWorkflow = New System.Windows.Forms.Button()
        Me.ListBox1 = New System.Windows.Forms.ListBox()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.SuspendLayout()
        '
        'VaultsLabel
        '
        Me.VaultsLabel.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.VaultsLabel.AutoSize = True
        Me.VaultsLabel.Location = New System.Drawing.Point(13, 26)
        Me.VaultsLabel.Name = "VaultsLabel"
        Me.VaultsLabel.Size = New System.Drawing.Size(94, 13)
        Me.VaultsLabel.TabIndex = 0
        Me.VaultsLabel.Text = " Select vault view:"
        '
        'VaultsComboBox
        '
        Me.VaultsComboBox.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.VaultsComboBox.FormattingEnabled = True
        Me.VaultsComboBox.Location = New System.Drawing.Point(16, 42)
        Me.VaultsComboBox.Name = "VaultsComboBox"
        Me.VaultsComboBox.Size = New System.Drawing.Size(121, 21)
        Me.VaultsComboBox.TabIndex = 1
        '
        'GraphWorkflow
        '
        Me.GraphWorkflow.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.GraphWorkflow.Location = New System.Drawing.Point(15, 199)
        Me.GraphWorkflow.Name = "GraphWorkflow"
        Me.GraphWorkflow.Size = New System.Drawing.Size(121, 23)
        Me.GraphWorkflow.TabIndex = 5
        Me.GraphWorkflow.Text = "Graph workflow"
        Me.GraphWorkflow.UseVisualStyleBackColor = True
        '
        'ListBox1
        '
        Me.ListBox1.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.ListBox1.FormattingEnabled = True
        Me.ListBox1.HorizontalScrollbar = True
        Me.ListBox1.Location = New System.Drawing.Point(15, 98)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.Size = New System.Drawing.Size(120, 95)
        Me.ListBox1.TabIndex = 6
        '
        'Label1
        '
        Me.Label1.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(13, 82)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(85, 13)
        Me.Label1.TabIndex = 7
        Me.Label1.Text = "Select workflow:"
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(227, 262)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.ListBox1)
        Me.Controls.Add(Me.GraphWorkflow)
        Me.Controls.Add(Me.VaultsComboBox)
        Me.Controls.Add(Me.VaultsLabel)
        Me.Name = "Form1"
        Me.Text = "Graph a workflow"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

#End Region

    Friend WithEvents VaultsLabel As System.Windows.Forms.Label
    Friend WithEvents VaultsComboBox As System.Windows.Forms.ComboBox
    Friend WithEvents GraphWorkflow As System.Windows.Forms.Button
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
    Friend WithEvents Label1 As System.Windows.Forms.Label

End Class

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