The Einhugur framework has similarities to Xojo in many ways<\/p>\n\n\n\n
It has a Canvas, just like Xojo<\/p>\n\n\n\n
And when you use its paint event you can do many of the same things like drawing text and shapes and pictures.<\/p>\n\n\n\n
We can add a canvas just like other controls. And we can implement the paint event in the same way.<\/p>\n\n\n\n
canvas = new Canvas(left,top,width,height);\ncanvas.Paint += canvas_Paint;<\/code><\/pre>\n\n\n\nAnd the paint event would look like<\/p>\n\n\n\n
private void canvas_Paint(object sender, PaintEventArgs args)\n{\n GraphicsContext g = args.Graphics;\n\n \/\/ GraphicsContext is in many respect like Xojo's\n \/\/ Graphics\n\n}<\/code><\/pre>\n\n\n\nNow you can change the fill colors, stroke colors (borders), and draw shapes & text. You also have built in rotation, clipping, and scaling. There are no bezier paths and some more complex drawing operations – yet.<\/p>\n\n\n\n
One thing you will notice is that getting an RGB or RGBA color is a little different.
Since colors in the Einhugur framework are based on CGColors internally they permit a really wide range of colors. Much more than the 0 – 255 based Xojo colors.
So, each component of a RGB color is a floating point value in the range 0 – 1 like the following <\/p>\n\n\n\n
g.FillColor = Einhugur.Drawing.Color.RGB((nfloat).6, (nfloat).3, (nfloat).4);<\/code><\/pre>\n\n\n\nRGBA is similar with the Alpha also being a value ni the range 0 – 1. <\/p>\n\n\n\n
Once you have the basics in place you can draw most anything you want.<\/p>\n\n\n\n
private void canvas_Paint(object sender, PaintEventArgs args)\n{\n GraphicsContext g = args.Graphics;\n\n g.FillColor = \n Einhugur.Drawing.Color.RGB((nfloat).6, (nfloat).3, (nfloat).4);\n\n g.StrokeColor = \n Einhugur.Drawing.Color.RGB((nfloat)0, (nfloat)1.0, (nfloat)0);\n\n g.DrawRoundRectangle(1, 1, \n (float)(canvas.Width - 2), (float)(canvas.Height - 2),\n 4, 4);\n}\n<\/code><\/pre>\n\n\n\nOh and yes, with creativity you can combine drawing pictures with threads !<\/p>\n\n\n\n