I know this question is over a year old, but I was searching trying to remember how I’ve done it in the past. So for anyone else’s reference, the quickest and less complex way then the above link is to override the WndProc function. /* Constants in Windows API 0x84 = WM_NCHITTEST – Mouse Capture … Read more
The Region propery simply cuts off the corners. To have a true rounded corner you will have to draw the rounded rectangles. Drawing rounded rectangles It might be easier to draw an image of the shape you want and put that on the transparent form. Easier to draw but cannot be resized.
Some sample code that allow moving and resizing the form: public partial class Form1 : Form { public Form1() { InitializeComponent(); this.FormBorderStyle = FormBorderStyle.None; this.DoubleBuffered = true; this.SetStyle(ControlStyles.ResizeRedraw, true); } private const int cGrip = 16; // Grip size private const int cCaption = 32; // Caption bar height; protected override void OnPaint(PaintEventArgs e) { … Read more