wPDF FAQ

Does wPDF only work with WPTools?

No, wPDF can also be used to create PDF files from general drawing code, such as Canvas.TextOut(). It works in two ways, 1) as export component for WPTools 2) as a universal PDF creation tool which provides a compatible canvas (class TCanvas).

Can I use wPDF to read and print PDF files ?

No, with wPDF you cannot print PDF files, but WPViewPDF you can.

Is the source code available ?

wPDF includes the pascal source for the VCL class which accesses the PDF-Engine DLL. This makes it possible to recompile the library with different Delphi or C++Builder Compiler. It does not include the source for the PDF-Engine. That is optionally available.

When do I need the 'Internet Server' License?

You need this license type if you want to create an application which runs on an internet server, such as an automatic order processing system. With the 'Server License' you may install the application on different IPs (different servers) and you also get the DCU files to compile your application without the wPDF DLL (for Delphi from V5).

With registered wPDF the message box still shows!

You probably have forgotten to tell the engine your license information. You need to use the procedure WPDF_START(). The necessary codes have been sent to you.

The created PDF files are too big!

1) Please check the Font-Mode property. If you embedd true type fonts this adds about 200KB data to the PDF file for each font.
2) It makes a difference whether you use jpeg or deflate compression for the images. Jpeg is better for photos, deflate is better for charts. Monochrome bitmaps will be always deflate

I cannot draw an opaque white background!

For technical reasons to optimize the size of the created PDF file, the color white (#FFFFFF) is ignored as a valid background color. Please use a color which is "almost" white, such as #FEFFFF.

Please also see property 'Modes'

My drawing appears to be stretched

If you export a metafile and know the resolution of the device which was used as reference to creat that metafile,
please avoid the function DrawMetafile and use the 'Ex' function instead.

Pass the resolution of the device as last 2 parameters like this:
DrawMetafileEx(0,0,0,0, metafile_handle, xres, yres );

For example if you export metafiles from WPForm use

meta := FD.GetMetafile(i);
WPPDFPrinter1.DrawMetafileEx(0,0,0,0,meta.Handle,
Screen.PiixelsPerInch, Screen.PiixelsPerInch );
meta.Free;

Text and bitmaps at the bottom a clipped. What can I do?

Windows clips output to the size of the output device, by default this is the monitor. Please change the property CanvasReference to wprefPrinter to solve this problem.