I'm trying to recreate a Winform application in C# that has the same functionality as the snipping tool windows provides. That is, allowing the user to drag a rectangle over the desktop and capture what ever is inside as an image.
At the moment I only have the ability to draw a rectangle with the mouse, and that's within the winform. Can anyone point me in the direction of how to do it so I can do it within the whole desktop?
My code for drawing the rectangle is as follows:
Rectangle rect;
public Form1()
{
InitializeComponent();
// set the cursor to be a + sign
this.Cursor = System.Windows.Forms.Cursors.Cross;
this.DoubleBuffered = true;
}
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
// e.X and e.Y are used to get the X and Y pos of the mouse
rect = new Rectangle(e.X, e.Y, 0, 0);
this.Invalidate();
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
// draw rectangle as mouse moves
rect = new Rectangle(rect.Left,rect.Top, e.X - rect.Left, e.Y - rect.Top);
}
this.Invalidate();
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
// Replace "Color.Red" with any color and repalce "2" with any size you like.
using (Pen pen = new Pen(Color.Red, 2))
{
e.Graphics.DrawRectangle(pen, rect);
}
}
}
I've been looking around online, but my searches haven't provided anything of use yet.
Any help would be greatly appreciated.
See:
http://www.codeproject.com/Articles/485883/Create-your-own-Snipping-Tool
And:
http://www.codeproject.com/Articles/21913/TeboScreen-Basic-C-Screen-Capture-Application
as references of Snipping tool creation.
Hope this helps.