包含vb.netdwg的词条

如何用.NET将DWG文件打印为PDF

因为有人问到，所以写了个例子。具体的要求是从.NET(比如C#)里面调用AutoCAD ActiveX API实现后台打印DWG文件为PDF文件，而且要把打印页面的大小设置成和DWG视图的页面的大小一致。当然除了ActiveX API，其它接口，比如ObjectARX和AutoCAD.NET API也支持打印并能实现上述功能的。不过我们今天就限定一下范围，用一用ActiveX API，而且指定产品是AutoCAD 2010吧。

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执行步骤：打开一个dwg文件，用netload加载下面代码所在的.dll文件，再输入命令plottest，就得到输出结果（一个.pdf文件）。

要用到的参考：

AcDbMgd.dll;AcMgd.dll;AutoCAD 2010 Type Library;System.Windows.Forms; AutoCAD/ObjectDBX Common 18.0 Type Library.

VB.NET:

Imports System

Imports Autodesk.AutoCAD.Runtime

Imports Autodesk.AutoCAD.Interop

Imports Autodesk.AutoCAD.Interop.Common

Imports Autodesk.AutoCAD.ApplicationServices

Imports Autodesk.AutoCAD.DatabaseServices

Imports Autodesk.AutoCAD.EditorInput

Autodesk.AutoCAD.Runtime.CommandMethod("Plottest") _

Public Sub PlotToPDF()

Dim activeDoc As Document = Application.DocumentManager.MdiActiveDocument

Dim ThisDrawing As AcadDocument = CType(activeDoc.AcadDocument, AcadDocument)

Dim layout As AcadLayout = ThisDrawing.ActiveLayout

Dim MediaName As String = layout.CanonicalMediaName

If MediaName.Equals("") Then

activeDoc.Editor.WriteMessage("There is no media set for the active layout.")

Return

Else

activeDoc.Editor.WriteMessage(("The media for the active layout is: " + MediaName))

End If

Try

Dim oplot As AcadPlotConfiguration = ThisDrawing.PlotConfigurations.Add("PDF", layout.ModelType)

oplot.PaperUnits = AcPlotPaperUnits.acMillimeters

oplot.StyleSheet = "monochrome.ctb"

oplot.PlotWithPlotStyles = True

oplot.ConfigName = "DWG To PDF.pc3"

oplot.UseStandardScale = True

oplot.StandardScale = AcPlotScale.acScaleToFit

oplot.PlotType = AcPlotType.acExtents

oplot.CenterPlot = True

Dim oMediaNames As Object = layout.GetCanonicalMediaNames

Dim mediaNames As ArrayList = New ArrayList(CType(oMediaNames, String()))

For Each sName As String In mediaNames

If sName.Contains(MediaName) Then

oplot.CanonicalMediaName = sName

layout.CopyFrom(oplot)

layout.PlotRotation = AcPlotRotation.ac0degrees

layout.RefreshPlotDeviceInfo()

ThisDrawing.SetVariable("BACKGROUNDPLOT", 0)

ThisDrawing.Plot.QuietErrorMode = True

ThisDrawing.Plot.PlotToFile("c:/temp/d1.pdf", "DWG To PDF.pc3")

oplot.Delete()

oplot = Nothing

Return

End If

Next

Catch es As System.Exception

System.Windows.Forms.MessageBox.Show(es.ToString)

End Try

End Sub

C#:

using System;

using System.Collections;

using System.Collections.Specialized;

using Autodesk.AutoCAD.Runtime;

using Autodesk.AutoCAD.DatabaseServices;

using Autodesk.AutoCAD.ApplicationServices;

using Autodesk.AutoCAD.EditorInput;

using Autodesk.AutoCAD.Interop;

using Autodesk.AutoCAD.Interop.Common;

// Define Command "plotTest"

[CommandMethod("plotTest")]

static public void PlotToPDF()

{

Document activeDoc = Application.DocumentManager.MdiActiveDocument;

AcadDocument ThisDrawing = activeDoc.AcadDocument as AcadDocument;

AcadLayout layout = ThisDrawing.ActiveLayout;

String MediaName = layout.CanonicalMediaName;

if (MediaName.Equals(""))

{

activeDoc.Editor.WriteMessage("There is no media set for the active layout.");

return;

}

else

{

activeDoc.Editor.WriteMessage("The media for the active layout is: " + MediaName);

}

try

{

AcadPlotConfiguration oplot = ThisDrawing.PlotConfigurations.Add("PDF", layout.ModelType);

oplot.PaperUnits = AcPlotPaperUnits.acMillimeters;

oplot.StyleSheet = "monochrome.ctb";

oplot.PlotWithPlotStyles = true;

oplot.ConfigName = "DWG To PDF.pc3";

oplot.UseStandardScale = true;

oplot.StandardScale = AcPlotScale.acScaleToFit;

oplot.PlotType = AcPlotType.acExtents;

oplot.CenterPlot = true;

Object oMediaNames = layout.GetCanonicalMediaNames();

ArrayList mediaNames = new ArrayList((string[])oMediaNames);

foreach (String sName in mediaNames)

{

if (sName.Contains(MediaName))

{

oplot.CanonicalMediaName = sName;

layout.CopyFrom(oplot);

layout.PlotRotation = AcPlotRotation.ac0degrees;

layout.RefreshPlotDeviceInfo();

ThisDrawing.SetVariable("BACKGROUNDPLOT", 0);

ThisDrawing.Plot.QuietErrorMode = true;

ThisDrawing.Plot.PlotToFile("c://temp//d1.pdf","DWG To PDF.pc3");

oplot.Delete();

oplot=null;

return;

}

}

}

catch (System.Exception es)

{

System.Windows.Forms.MessageBox.Show(es.ToString());

}

}

输出结果：

VB.NET 如何通过按钮打开AUTOCAD的指定文件

Process.Start(“cad主程序的路径”，“要打开文件的目录”)

比如用记事本打开 c:\1.txt

Process.Start("C:\Windows\notepad.exe", "c:\1.txt")

在vs2012下，vb.net中点击一个按钮，就会打开一个指定位置的cad图形，然后可以在里面画图，

你是要操作cad文件？网上有操作dxf或dwg格式的代码，你看看dxf的格式吧，是明码的。

简单的点线这些好实现，但要尺寸标注或其它的就要麻烦些

如何用vb.net编程在cad图形中插入dwg图块？

Dim ppr As PromptPointResult = ed.GetPoint("请选择插入点：")

Dim pt As Point3d = ppr.Value

utility.WriteToEditor(pt.ToString())

Dim pidBlock As New PIDBlock()

'自己定义的图块类，保存图块的路径和名称 

pidBlock.Name = "sample"

pidBlock.Path = blockPath  "b_sample.dwg"

Using blkDb As New Database(False, True)

'read drawing 

blkDb.ReadDwgFile(pidBlock.Path, System.IO.FileShare.Read, True, Nothing)

blkDb.CloseInput(True)

Using docLock As DocumentLock = doc.LockDocument()

'多文档要先这样，否则报至命错误 

Using t As Transaction = doc.TransactionManager.StartTransaction()

'insert it as a new block 

Dim idBTR As ObjectId = doc.Database.Insert(pidBlock.Name, blkDb, False)

'create a ref to the block 

Dim bt As BlockTable = DirectCast(t.GetObject(doc.Database.BlockTableId, OpenMode.ForRead), BlockTable)

Dim btr As BlockTableRecord = DirectCast(t.GetObject(bt(BlockTableRecord.ModelSpace), OpenMode.ForWrite), BlockTableRecord)

Using bref As New BlockReference(pt, idBTR)

btr.AppendEntity(bref)

t.AddNewlyCreatedDBObject(bref, True)

End Using

t.Commit()

End Using

End Using

End Using

在VB.NET中浏览图片

转换成位图肯定是可以浏览的，WMF文件没试过。

你可以将图片以二进制形式存储在数据库中，如果是SQL Server，对应字段的类型应该是image。

vb.net 禁用第三方 控件滚轮事件

拦截窗口程序消息可以解决

参考 VB王国荣API讲座 讲消息的那章

几个API就可以搞定