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Wanted: Examples of drawing pixels and lines

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kwhitefoot:
Can anyone point me at the right way to create a simple application that draws lines and pixels on a window using Lazarus.  I thought I saw mention of a class called TCanvas but it doesn't seem to be in the toolbox.

Marc:
Drop a paintbox on a form and use paintbox.Canvas to draw on

Giuseppe Ridinò:
Try this:
http://pascalprogramming.schoolreference.com/
you can find something usefull.

kwhitefoot:
Thanks Marc.

That works nicely.  Now all I have to do is figure out how to drive the Lazarus IDE.  It works fine until I realize that I need to change the name of a unit or form then all hell breaks loose and the compiler can't find things anymore. :-(

Actually I don't like form painters.  I would much rather write code that built the form and have a preview feature that showed me the result without having to compile the whole program first.  That way there would be no hidden code.

Marc:

--- Quote from: "kwhitefoot" ---
That works nicely.  Now all I have to do is figure out how to drive the Lazarus IDE.  It works fine until I realize that I need to change the name of a unit or form then all hell breaks loose and the compiler can't find things anymore. :-(

--- End quote ---


Don't rename files manually, use File -> Save As  to rename units.
If you did the latter and it still gets a mess, file a bug.

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