attempt at game of life, drawing the grid and filling the cells

Simon

hi guys, iv just started to create a grid for my "game of life", basically what i want to do is on mouse down i want the corresponding cell to fill with the color selected for my brush. i have drawn the grid as follows:

{


            Pen p = new Pen(Color.Black);
            g1 = Graphics.FromImage(grid);





            for (int i = 0; i < 300; i = i + 50) ;

            for (int i = 10; i < 300; i = i + 20)
            {
                g1.DrawLine(p, 10, i, 290, i);
            }
            for (int x = 10; x < 300; x = x + 20)
            {
                g1.DrawLine(p, x, 10, x, 290);
            }


        }
can anyone help me on how to fill the rectangles with my chosen color when clicked on? do i need to use DrawRectangle instead of DrawLine for the basic grid?

any help is great, thanks!!

8 Replies

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Ryan Alford19y ago
using a DataGridView and viewing in [Design] mode, click the grid and go to it's properties. Scroll down until you see "DefaultCellStyle" and click on the button. in the pop-up box, you will see a "SelectionBackColor". this sets the backcolor when a cell is selected. you can also set the forecolor when the cell is selected.
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Simon19y ago
that would probably be a simpler way of putting it lol yeh, instead of drawing on top of the grid lines. As you know im a beginner so if you can give me any tips on making the game of life then that would be great also? thanks again
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Ryan Alford19y ago
are you just trying to change the background color of a cell when it's clicked?
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Simon19y ago
ok, so now i have the rectangle drawing when the mouse is clicked, brilliant, it draws and fills the grid if i am precise in where i click. is there a way of filling a cell when i click that certain cell?? so far all i have to draw at the moment is:

private void Form4_MouseDown(object sender, MouseEventArgs e)

{

{

/*

x = 31;

y = 31;

x2 = 91;

y2 = 91;

*/

SolidBrush myBrush = new SolidBrush(Color.Red);

Graphics g = this.CreateGraphics();

//g.FillRectangle(myBrush, x, y, 19, 19);

g.FillRectangle(myBrush, e.X, e.Y, 19, 19);

}

help! please! :)
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Simon19y ago
brilliant thank u!! got it drawing, any clues on drawing where the mouse is clicked? i.e., inside the cells, iv tried mouseposition.X and mouseposition.Y however this makes my box appear in a differnt part of the screen to wher is clicked.

again any help is brilliant, thnks
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Ryan Alford19y ago
my apologies. you use the linear gradiant brush if you want a shape to fade from one color to another.

to color just one solid color, yes, you can use a solid brush.

something like this...
// get the Graphics of a form Graphics g = form.CreateGraphics(); SolidBrush solidBrush = new SolidBrush(Color.Blue); g.FillRectangle(solidBrush, 10, 20, 100, 100);
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Simon19y ago
ok, but i can only see a solid brush, is that what i need? appologies, im a beginner at c#, thank u tho
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Ryan Alford19y ago
to fill a rectangle, use a linear gradiant brush instead of a pen.

then use the the FillRectangle method of the Graphics object
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