How in Delphi7 to change the color of an ellipse if there are for example 5 images of different colors, or can it be organized differently (without images)?

  • Probably a redraw. - Niki-Timofe
  • And can show an approximate code, at least for one ellipse - inceon

1 answer 1

If you use canvas, you can read this article first . There everything is described in detail:

"... Canvas - an object of the TCanvas class has many methods that allow you to draw graphs, lines, shapes using the Pen property. Pen. This property is an object that in turn has a number of properties. One of them is the Color property you already know. the second property is Width (line width). The width is specified in pixels ... "

And in order to change the color of the drawings made on the canvas, they will have to be redrawn. For this, the whole canvas is cleared (it seems so, I don’t remember exactly :))

Canvas.Brush.Color:=clBtnFace; // тут цвет, каким будет зачищена вся выбранная канва Canvas.FillRect(Canvas.ClipRect);

And then draw your ellipses with the right colors.

In general, the Internet gives a lot of information on request "Delphi canvas"