LoadFromCanvasDC

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   Hi, 
let me ask:
Is any way to use another canvasDC than canvas create with  GetCanvasDC?
I have a program for printing. I use GDI+ from .NET. 
From this same data I can generate a PDF file using command from PDF library with another program. 
If had been able use a PaintEventArgs.Graphics (exactly PaintEventArgs.Graphics.GetHdc()) as a canvas instead of GetCanvasDC - I could have only one  program.
Thanks!
Jan

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Jan Members Profile Find Members Posts Beginner Joined: 24 May 10 Location: Czech Republic Status: Offline Points: 14	Post Options Post Reply Quote Jan Report Post Thanks(0) Quote Reply Topic: LoadFromCanvasDC Posted: 24 May 10 at 1:21PM
	Hi, let me ask: Is any way to use another canvasDC than canvas create with GetCanvasDC? I have a program for printing. I use GDI+ from .NET. From this same data I can generate a PDF file using command from PDF library with another program. If had been able use a PaintEventArgs.Graphics (exactly PaintEventArgs.Graphics.GetHdc()) as a canvas instead of GetCanvasDC - I could have only one program. Thanks! Jan

mulfycrowh Members Profile Find Members Posts Beginner Joined: 03 May 10 Status: Offline Points: 18	Post Options Post Reply Quote mulfycrowh Report Post Thanks(0) Quote Reply Posted: 29 May 10 at 6:50AM
	Hi ! Before purchasing the library, I would like to render a PDF file on the screen. I have been building my project under VC++ and DirectX. I asked many questions to know how to render under DirectX. I was told by technical support it would be better to use GDI+. Well, I am trying to do so. Do you have any sample under GDI+ ? Many Thanks !

Jan Members Profile Find Members Posts Beginner Joined: 24 May 10 Location: Czech Republic Status: Offline Points: 14	Post Options Post Reply Quote Jan Report Post Thanks(0) Quote Reply Posted: 31 May 10 at 7:50AM
	Hi! I make only one attempt to rendering PDF on screen with Quick PDF library. I easy overwrite Form1.OnPanit procedure. This is not correct using rendering, this only show me, that rendering with library is possible. protected override void OnPaint(PaintEventArgs e) { Graphics g = e.Graphics; /* Rendering with s QuickPDF */ string fileName = @"c:\temp\file_to_render.pdf"; string fileVystup = @"c:\temp\fromQuickPDF.pdf"; string licenseKey = "<your licence key>"; int vysledek; int FileHandle; // Create the library. A blank document is automatically created at this point PDFLibrary qp = new PDFLibrary("C:\\Program Files\\Quick PDF Library\\DLL\\QuickPDFDLL0719.dll"); // Unlock the library qp.UnlockKey(licenseKey); // Check to see if the library has been successfully unlocked if (qp.Unlocked() == 1) { // open file FileHandle = qp.DAOpenFileReadOnly(fileName, ""); // rendering file vysledek = qp.DARenderPageToDC(FileHandle, qp.DAFindPage(FileHandle, 1), 100, g.GetHdc().ToInt32()); }

Jan Members Profile Find Members Posts Beginner Joined: 24 May 10 Location: Czech Republic Status: Offline Points: 14	Post Options Post Reply Quote Jan Report Post Thanks(0) Quote Reply Posted: 31 May 10 at 7:59AM
	May be, that I wrong understand what you want... When you ask for rendering graphics using GDI+ , that my answer is no. Every my attempt to render graphics with GDI+ and than save it as PDF fault. I have only example with make grafics using gdi32.dll library and then save this to PDF file using LoadFromCanvasDC and SaveToFile.