Draw rectangle from right to left

Question

Hi everybody I want to draw some rectangles from right to left on a Panel wich is on TabControl TabControl.RightToLeft : yes TabControl.RightToLeftLayout : true I use : Point.Location= new system.drawing.point(xy); Point.size=new system.drawing.size(width height) these rectangles must be drawn from right to left according with TabControl with certainly a loop for Thank you very much for your help

Danatas Gervi · Answer

You cannot use my code as is. Correction is absolutely nessesary. I try to show only prinsipal solution. Here is more common version: private void tabPage1_Click(object sender EventArgs e) { int x = 10; int y = 10; int width = 40; int height = 50; Point Location = new Point(x y); Size size = new Size(width height); Rectangle rect = new Rectangle(Location size); Pen rectPen = new Pen(Brushes.Blue 4); this.RightToLeft = RightToLeft.Yes; // //this.RightToLeft = RightToLeft.No; // comment this! TabPage tPage = tabControl1.TabPages[0]; if (this.RightToLeft == RightToLeft.Yes) { rect.Location = new Point(tPage.Width - rect.Size.Width - rect.Location.X rect.Location.Y); } tPage.CreateGraphics().DrawRectangle(rectPen rect); } Have a look - tPage.Width - rect.Size.Width - rect.Location.X this is reversing (mirroring) the location of rectangle.

A D · Answer

Hi Thank you very much it works very well. I have added a Splitter (Dock.right) just before my tabPage and when the splitter moves the rectangle drawn on the tabPage desappears. I think I must add some thing about the splitter x coordinate to counter this problem Thank you for your help

A D · Answer

Thank you for replay I've tried it but it doesn't work

Danatas Gervi · Answer

So you can calculate the correct start point: this.RightToLeft = RightToLeft.Yes; //tabControl1.TabPages[0].CreateGraphics().DrawRectangle(rectPen 10 10 40 50); if (this.RightToLeft == RightToLeft.Yes) { TabPage tPage = tabControl1.TabPages[0]; tPage.CreateGraphics().DrawRectangle(rectPen tPage.Width - 10 - 40 10 40 50); }

Danatas Gervi · Answer

If you will use .CreateGrafic() from any Control - the coordinates of this grafic will be relative to this control Pen rectPen = new Pen(Brushes.Blue 4); tabControl1.CreateGraphics().DrawRectangle(rectPen 10 10 40 50); // this is better: tabControl1.TabPages[0].CreateGraphics().DrawRectangle(rectPen 10 10 40 50);