private void newToolStripMenuItem_Click(object sender, EventArgs e) //to create a new option in our file menu
{
DialogResult dialogResult = MessageBox.Show("Do you want to save changes", "WinFormPaint",
MessageBoxButtons.YesNoCancel);
if (dialogResult == DialogResult.Yes)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "Images (*.png)|*.png";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
Bitmap graphicSurface = new Bitmap(900, 300);
Graphics gp = Graphics.FromImage(graphicSurface);
Rectangle rect = PnlDrawBoard.RectangleToScreen(PnlDrawBoard.ClientRectangle);
gp.CopyFromScreen(rect.Location, Point.Empty, PnlDrawBoard.Size);
gp.Dispose();
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
graphicSurface.Save(saveFileDialog1.FileName, ImageFormat.Png);
filePath = saveFileDialog1.FileName;
}
}
else if (dialogResult == DialogResult.No)
{
g.Clear(PnlDrawBoard.BackColor);
}
}
public Form1()
{
InitializeComponent();
g = PnlDrawBoard.CreateGraphics();
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
pen = new Pen(Color.Black, 1);
pen.StartCap = pen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
cmbPencilSize.Enabled = false;
cmbPaintBrush.Enabled = false;
undo = new Stack <Bitmap>();
redo = new Stack <Bitmap>();
}
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e) //to create a save as option in our menu
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "Images (*.png)|*.png";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
Bitmap graphicSurface = new Bitmap(900, 300);
Graphics gp = Graphics.FromImage(graphicSurface);
Rectangle rect = PnlDrawBoard.RectangleToScreen(PnlDrawBoard.ClientRectangle);
gp.CopyFromScreen(rect.Location, Point.Empty, PnlDrawBoard.Size);
gp.Dispose();
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
graphicSurface.Save(saveFileDialog1.FileName, ImageFormat.Png);
filePath = saveFileDialog1.FileName;
}
}
//Fired when the mouse pointer is over the pnl_Draw and a mouse button is released.
private void PnlDrawBoard_MouseUp(object sender, MouseEventArgs e)
{
if (drawLine)
{
xEndValue = e.X;
yEndValue = e.Y;
DrawALine();
}
Bitmap graphicSurface = new Bitmap(900, 300);
Graphics gp = Graphics.FromImage(graphicSurface);
Rectangle rect = PnlDrawBoard.RectangleToScreen(PnlDrawBoard.ClientRectangle);
gp.CopyFromScreen(rect.Location, Point.Empty, PnlDrawBoard.Size);
gp.Dispose();
undo.Push(graphicSurface);
isEraserClicked = startPaint = false;
initX = null;
initY = null;
xStartValue = yStartValue = xEndValue = yEndValue = 0;
}