VectorDraw Developer Framework（VDF）是一個(gè)用于應(yīng)用程序可視化的圖形引擎庫(kù)。有了VDF提供的功能，您可以輕松地創(chuàng)建、編輯、管理、輸出、輸入和打印2D和3D圖形文件。
VectorDraw Developer Framework試用版下載
問(wèn)：
有關(guān)于多線程的打印問(wèn)題，應(yīng)該如何解決？
答：
已改進(jìn)了順序調(diào)用vddocument不同實(shí)例的方法以在多線程項(xiàng)目中工作，一個(gè)線程用于每個(gè)不同的vdDocument。
Example:
using System;
using System.Threading;
using VectorDraw.Professional.Components;
using VectorDraw.Professional.vdObjects;
using System.Windows.Forms;
using VectorDraw.Generics;namespace MultiPrint
{
class Program
{
const string ExportExtension = ".pdf";
//const string ExportExtension = ".svg";
//const string ExportExtension = ".jpg";
//const string ExportExtension = ".emf";
//const string ExportExtension = ".bmp";
//const string ExportExtension = ".png";
//const string ExportExtension = ".HPG"; //const string ExportExtension = ".dxf";
public static bool IsPrintExportFormat
{
get
{
return
(string.Compare(ExportExtension, "", true) == 0
|| string.Compare(ExportExtension, ".jpg", true) == 0
|| string.Compare(ExportExtension, ".pdf", true) == 0
|| string.Compare(ExportExtension, ".svg", true) == 0
|| string.Compare(ExportExtension, ".emf", true) == 0
|| string.Compare(ExportExtension, ".HPG", true) == 0
|| string.Compare(ExportExtension, ".png", true) == 0
|| string.Compare(ExportExtension, ".bmp", true) == 0
);
}
}
[STAThread]
static void Main(string[] args)
{
Console.BufferWidth = 180; FolderBrowserDialog folderbrowser = new FolderBrowserDialog();
folderbrowser.RootFolder = Environment.SpecialFolder.Desktop;
folderbrowser.SelectedPath = Environment.CurrentDirectory;
DialogResult res = folderbrowser.ShowDialog(); if (res != DialogResult.OK) return;
string argument = folderbrowser.SelectedPath + @"\";
string folder = System.IO.Path.GetDirectoryName(argument);
Environment.CurrentDirectory = folder;
if (folder == null || folder == string.Empty || !System.IO.Directory.Exists(folder)) throw new Exception("Pass an existing folder as argument.");
string[] files = System.IO.Directory.GetFiles(folder, "*.*", System.IO.SearchOption.TopDirectoryOnly); vdArray<string> filenames = new vdArray<string>();
foreach (string filename in files)
{
if (filename.EndsWith(".vdcl", StringComparison.InvariantCultureIgnoreCase)
|| filename.EndsWith(".vdml", StringComparison.InvariantCultureIgnoreCase)
|| filename.EndsWith(".dwg", StringComparison.InvariantCultureIgnoreCase)
|| filename.EndsWith(".dxf", StringComparison.InvariantCultureIgnoreCase)
)
{
filenames.AddItem(filename);
}
}
string message = "SelectedFiles :";
foreach (string item in filenames)
{
message += string.Format("\n{0}", item);
}
message += string.Format("\n\n Continue Exporting to {0} ?", ExportExtension);
res = MessageBox.Show(message, "Selected Files", MessageBoxButtons.YesNo);
if (res == DialogResult.No) return;
int i = 0; foreach (string item in filenames)
{
BeginNewPrintJob(item, i); i++;
}
}
static void BeginNewPrintJob(string filename, int jobid)
{
DocumentJob job = new DocumentJob(jobid); Thread thread = new Thread(new ParameterizedThreadStart(job.PrintFile));
thread.Name = "PrintJob : " + filename;
thread.SetApartmentState(ApartmentState.MTA);
thread.Start(filename);
}
class DocumentJob
{
int lineNo = 0;
public DocumentJob(int jobId)
{
lineNo = jobId;
}
public void PrintFile(object Params)
{
string fname = Params as string;
PrintMessage(string.Format("{0,-40} ", System.IO.Path.GetFileName(fname)) + "Start"); vdDocumentComponent DocComponent = new vdDocumentComponent();
vdDocument document = DocComponent.Document;
document.FileName = fname;
document.OnPrompt += new vdDocument.PromptEventHandler(document_OnPrompt);
document.OnProgress += new VectorDraw.Professional.Utilities.ProgressEventHandler(document_OnProgress);
document.GenericError += new vdDocument.GenericErrorEventHandler(document_GenericError);
document.OnLoadUnknownFileName += new vdDocument.LoadUnknownFileName(document_OnLoadUnknownFileName);
document.OnIsValidOpenFormat += new vdDocument.IsValidOpenFormatEventHandler(document_OnIsValidOpenFormat);
document.OnSaveUnknownFileName += new vdDocument.SaveUnknownFileName(document_OnSaveUnknownFileName);
document.OnGetSaveFileFilterFormat += new vdDocument.GetSaveFileFilterFormatEventHandler(document_OnGetSaveFileFilterFormat);
bool success = document.Open(fname);
if (success)
{
success = false;
if (IsPrintExportFormat)
{
vdPrint printer = document.Model.Printer;
printer.PrinterName = System.IO.Path.GetDirectoryName(fname) + @"\" + System.IO.Path.GetFileNameWithoutExtension(fname) + ExportExtension;
printer.paperSize = new System.Drawing.Rectangle(0, 0, 827, 1169);//A4
printer.LandScape = false;
printer.PrintExtents();
printer.PrintScaleToFit();
printer.CenterDrawingToPaper();
printer.PrintOut();
success = true;
}
else
{
if (string.Compare(ExportExtension, System.IO.Path.GetExtension(fname)) != 0)
success = document.SaveAs(System.IO.Path.GetDirectoryName(fname) + @"\" + System.IO.Path.GetFileNameWithoutExtension(fname) + ExportExtension);
}
}
if (success) PrintMessage(string.Format("{0,-40} ", System.IO.Path.GetFileName(document.FileName)) + "Finish");
else PrintMessage("Error Exporting " + fname);
document.OnPrompt -= new vdDocument.PromptEventHandler(document_OnPrompt);
document.OnProgress -= new VectorDraw.Professional.Utilities.ProgressEventHandler(document_OnProgress);
document.GenericError -= new vdDocument.GenericErrorEventHandler(document_GenericError);
document.OnLoadUnknownFileName -= new vdDocument.LoadUnknownFileName(document_OnLoadUnknownFileName);
document.OnIsValidOpenFormat -= new vdDocument.IsValidOpenFormatEventHandler(document_OnIsValidOpenFormat);
document.OnSaveUnknownFileName -= new vdDocument.SaveUnknownFileName(document_OnSaveUnknownFileName);
document.OnGetSaveFileFilterFormat -= new vdDocument.GetSaveFileFilterFormatEventHandler(document_OnGetSaveFileFilterFormat);
DocComponent.Dispose();
} void document_OnGetSaveFileFilterFormat(ref string saveFilter)
{
saveFilter = "*.vdml|*.vdcl|*.dxf|*.dwg|*.svg|*.pdf|*.emf|*.HPG|*.bmp|*.jpg|*.png||"; }
void document_OnSaveUnknownFileName(object sender, string fileName, out bool success)
{
success = false;
vdDocument document = sender as vdDocument;
if (fileName.EndsWith(".dwg", StringComparison.InvariantCultureIgnoreCase))
{
success = vdxFcnv.ConversionUtilities.SaveDwg(document, fileName);
}
else if (fileName.EndsWith(".dxf", StringComparison.InvariantCultureIgnoreCase))
{
vdDXF.vdDXFSAVE dxf = new vdDXF.vdDXFSAVE();
success = dxf.SaveDXF(document, fileName);
}
} void document_OnIsValidOpenFormat(object sender, string extension, ref bool success)
{
if (extension.EndsWith(".dwg", StringComparison.InvariantCultureIgnoreCase) ||
extension.EndsWith(".dxf", StringComparison.InvariantCultureIgnoreCase))
{
success = true;
}
} void document_OnLoadUnknownFileName(object sender, string fileName, out bool success)
{
success = false;
vdDocument document = sender as vdDocument;
if (fileName.EndsWith(".dwg", StringComparison.InvariantCultureIgnoreCase))
{
success = vdxFcnv.ConversionUtilities.OpenDwg(document, fileName);
}
else if (fileName.EndsWith(".dxf", StringComparison.InvariantCultureIgnoreCase))
{
success = vdDXF.vdDXFopen.LoadFromStream(document, new System.IO.FileStream(fileName, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.None));
}
}
void PrintMessage(string message)
{
message = message.Replace("\r\n", "");
message = message.Replace("\n", "");
message += new string(' ', Console.BufferWidth - message.Length);
lock (Console.Out)
{
Console.SetCursorPosition(0, lineNo);
Console.Out.Write(message);
}
}
void document_GenericError(object sender, string Membername, string errormessage)
{
vdDocument document = sender as vdDocument;
PrintMessage(string.Format("{0,-40} ", System.IO.Path.GetFileName(document.FileName)) + Membername + errormessage);
}
void document_OnProgress(object sender, long percent, string jobDescription)
{
if (percent == 0) percent = 100;
vdDocument document = sender as vdDocument;
PrintMessage(string.Format("{0,-40} ", System.IO.Path.GetFileName(document.FileName)) + jobDescription + " : " + percent.ToString() + "%");
} void document_OnPrompt(object sender, ref string promptstr)
{
if (promptstr == null) return;
string str = promptstr;
str = str.Trim();
if (str == string.Empty) return;
vdDocument document = sender as vdDocument;
PrintMessage(string.Format("{0,-40} ", System.IO.Path.GetFileName(document.FileName)) + str);
}
}
}
} 對(duì)于以上問(wèn)答，如果您有任何的疑惑都可以在評(píng)論區(qū)留言，我們會(huì)及時(shí)回復(fù)。此系列的問(wèn)答教程我們會(huì)持續(xù)更新，如果您感興趣，可以多多關(guān)注本教程。
相關(guān)資料推薦：
VectorDraw Developer Framework（VDF）示例
如果您對(duì)想要購(gòu)買正版授權(quán)VectorDraw Developer Framework（VDF），可以聯(lián)系咨詢相關(guān)問(wèn)題。
關(guān)注慧聚IT微信公眾號(hào) ???，了解產(chǎn)品的最新動(dòng)態(tài)及最新資訊。
標(biāo)簽：
本站文章除注明轉(zhuǎn)載外，均為本站原創(chuàng)或翻譯。歡迎任何形式的轉(zhuǎn)載，但請(qǐng)務(wù)必注明出處、不得修改原文相關(guān)鏈接，如果存在內(nèi)容上的異議請(qǐng)郵件反饋至chenjj@fc6vip.cn
文章轉(zhuǎn)載自：
金喜正規(guī)買球 
19次
相關(guān)產(chǎn)品
正式授權(quán)
最新文章 
金喜正規(guī)買球相關(guān)的文章 
微信
在線咨詢
渝公網(wǎng)安備
50010702500608號(hào)
客服熱線