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Get Preview Bitmap of Drawing Sheet Example (VB.NET)

This example shows how to get a BMP preview bitmap of the sheet that was active when then the drawing was last saved.

'-----------------------------------------------------------------------------

' Preconditions:

' 1. Specify your license key for sLicenseKey.

' 2. In the SolidWorks Visual Studio Tools for

'    Applications IDE, add references for

'    Microsoft.VisualBasic.Compatibility, System.Drawing,

'    stdole, and SolidWorks.Interop.swdocumentmgr.

'   (click Project > Add Reference).

'

' Postconditions: Navigate to your c:\temp folder and right-click

' foodprocessor.bmp and select Preview from the shortcut menu to

' view the bitmap.

'---------------------------------------------------------------------------

Imports SolidWorks.Interop.sldworks

Imports SolidWorks.Interop.swconst

Imports SolidWorks.Interop.swdocumentmgr

Imports Microsoft.VisualBasic.Compatibility.VB6

Imports System.Drawing.Image

Imports stdole

Imports System

Imports System.Diagnostics

 

Partial Class SolidWorksMacro

 

    Public Sub main()

 

        Const sLicenseKey As String = "your_license_key" 'Specify license key

        Const sDocFileName          As String = "C:\Program Files\SolidWorks Corp\SolidWorks\samples\tutorial\advdrawings\foodprocessor.slddrw" ' Or specify your document

        Const sExtractDir As String = "c:\temp\" ' Or specify your disk and folder location

        Const sFilename             As String = "foodprocessor" ' Or specify your filename

        Dim swClassFact As SwDMClassFactory

        Dim swDocMgr As SwDMApplication

        Dim swDoc As SwDMDocument

        Dim swDoc10 As SwDMDocument10

        Dim pPreview As stdole.IPictureDisp

        Dim image As Drawing.Image

        Dim nDocType As Long

        Dim nRetVal As Long

 

        ' Determine type of SolidWorks file based on file extension

        If InStr(LCase(sDocFileName), "sldprt") > 0 Then

            nDocType = SwDmDocumentType.swDmDocumentPart

        ElseIf InStr(LCase(sDocFileName), "sldasm") > 0 Then

            nDocType = SwDmDocumentType.swDmDocumentAssembly

        ElseIf InStr(LCase(sDocFileName), "slddrw") > 0 Then

            nDocType = SwDmDocumentType.swDmDocumentDrawing

        Else

            ' Probably not a SolidWorks file,

            ' so cannot open

            nDocType = SwDmDocumentType.swDmDocumentUnknown

            Exit Sub

        End If

 

        swClassFact = CreateObject("SwDocumentMgr.SwDMClassFactory")

        swDocMgr = swClassFact.GetApplication(sLicenseKey)

        swDoc = swDocMgr.GetDocument(sDocFileName, nDocType, False, nRetVal) : Debug.Assert(SwDmDocumentOpenError.swDmDocumentOpenErrorNone = nRetVal)

        Debug.Print("File = " & swDoc.FullName)

        Debug.Print("  Version          = " & swDoc.GetVersion)

        Debug.Print("  Author           = " & swDoc.Author)

        Debug.Print("  Comments         = " & swDoc.Comments)

        Debug.Print("  CreationDate     = " & swDoc.CreationDate)

        Debug.Print("  Keywords         = " & swDoc.Keywords)

        Debug.Print("  LastSavedBy      = " & swDoc.LastSavedBy)

        Debug.Print("  LastSavedDate    = " & swDoc.LastSavedDate)

        Debug.Print("  Subject          = " & swDoc.Subject)

        Debug.Print("  Title            = " & swDoc.Title)

        swDoc10 = swDoc

        pPreview = swDoc10.GetPreviewBitmap(nRetVal)

        image = Support.IPictureDispToImage(pPreview)

        image.Save(sExtractDir + sFilename + ".bmp", Drawing.Imaging.ImageFormat.Bmp)

        Debug.Print("    Preview stream  = " & swDoc10.PreviewStreamName)

    End Sub

    ''' <summary>

    ''' The SldWorks swApp variable is pre-assigned for you.

    ''' </summary>

    Public swApp As SldWorks

End Class



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