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printing the contents of a tpaintbox

  • 23-04-2003 04:38PM
    #1
    tommycahir
    Registered Users, Registered Users 2 Posts: 2,592 ✭✭✭


    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???


Comments

  • #2
    dazberry
    Registered Users, Registered Users 2 Posts: 2,157 ✭✭✭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

    D.


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