C#

Bitmap b1 = new Bitmap(256, 256);
Bitmap b2 = new Bitmap(256, 256);
Bitmap final = new Bitmap(256, 256);
Graphics g = Graphics.FromImage(b1);
g.DrawRectangle(Pens.Red, 0, 0, 150, 150);
g.Dispose();
g = Graphics.FromImage(b2);
g.DrawEllipse(Pens.Black, 100, 100, 50, 50);
g.Dispose();
g = Graphics.FromImage(final);
g.DrawImage(b1, new Point(0, 0)); // Delete this line if you dont want to draw b1 image
g.DrawImage(b2, new Point(0, 0));
g.Dispose();
pictureBox1.BackgroundImage = final;

kanchoette wrote:

...bound to a checkbox control

kanchoette wrote:

...set the boolean to false for all other rows.

Megidolaon wrote:

I added a ScrollBar to the control and to the Controls property of the Panel.

Megidolaon wrote:

I thought of clearing the Controls property of the Panel and always just adding the visible PictureBoxes (they all are stored in an extra collection), determining which ones are visible by Panel and PictureBox size.Though, this would need calculations and have to be pixel-exact, if possible I dould like to avoid this and use a more elegant way.

g.DrawImage(resource, new Rectangle(0, 0, 32, 32), 
   new Rectangle(32 * i, 32 * k, 32, 32), GraphicsUnit.Pixel);

for (int i = 0; i <= width; i++)
            {
                for (int k = 0; k <= height; k++)
                {
                    if (i == 7 && k == 15)
                    {
                        this.Text = this.Text;
                    }
                    g = Graphics.FromImage(memory);

                    coordinate = new Point(i, k);
                    pictureboxes.Add(coordinate, new PictureBox());
                    pictureboxes[coordinate].Height = 32;
                    pictureboxes[coordinate].Width = 32;
                    pictureboxes[coordinate].Visible = true;
                    pictureboxes[coordinate].Anchor = AnchorStyles.Left | AnchorStyles.Top;
                    pictureboxes[coordinate].BorderStyle = BorderStyle.FixedSingle;
                    pictureboxes[coordinate].Margin = new Padding(0);

                    pictureboxes[coordinate].Location = new Point(32 * i, 32 * k);

                    pictureboxes[coordinate].MouseDown += new MouseEventHandler(OnLeftDown);
                    pictureboxes[coordinate].MouseDown += new MouseEventHandler(OnRightClick);

                    g.DrawImage(resource, new Rectangle(0, 0, 32, 32), 
                        new Rectangle(32 * i, 32 * k, 32, 32), GraphicsUnit.Pixel);
                    
                    pictureboxes[coordinate].Image = new Bitmap(memory, new Size(32, 32));

                    FLP_Resource.Controls.Add(pictureboxes[coordinate]);
                }

Xmen wrote:

what that mean ?

Megidolaon wrote:

So that I ensure I have only 1 PictureBox for each coordinate.In a List I could end up having with 2 PictureBoxes having the same coordiantes.

Megidolaon wrote:

When you assign the Image property of a PictureBox, you can only assign the whole image, in my case that would be the whole 256x2000 pixel source image.What I want is to split that image into 32x32 pixel tiles and assign each of these tiles to a different PictureBox, so you can click on and select each separately.Then you can paste the 32x32 tiles and build your map with them.

Xmen wrote:

2000 cant be divide by 32, your image must have 2048 height if you gonna tile of 32 x 32

Xmen wrote:

Cursor Position : 35, 126
Nearest Tile Position(by rounding) : 32, 96

Xmen wrote:

An advice, do not set Image in Image property, use BackgroundImage instead, therefore you can use BackgroundImageLayout and avoid lots of hassles.

pictureboxes[coordinate].BackgroundImageLayout = ImageLayout.Tile;