printing the contents of a tpaintbox

tommycahir

hi does any body out there know of a way to proint the contents of a tpaintbox so far this is what i have

TPrinter *Prntr = Printer();
Prntr->BeginDoc();
mainFrame->Canvas;
Prntr->EndDoc();

but the printer keeps throwing out blank pages???

dazberry

You need to copy the contents of the paintbox canvas to the printer canvas.
There are however a few problems.

[1] TPaintbox does not store an image - hence the onpaint method. As a result you can't copy from a TPaintBox to another canvas.
[2] Assuming you overcome [1], you will have scaling problems, because the printer canvas is a lot larger than the on screen canvas, so although things will appear fine onscreen, they'll be tiny on a printed page.

TPrinter *Prntr = Printer();
Prntr->BeginDoc();
//mainFrame->Canvas;
Prntr->Canvas->CopyRect(...)
Prntr->EndDoc();

Hint: Take a look at StretchBlt

D.