// Functions about PANELS private void InitializePanels() { ChooseCardsSkins ChooseSkinCards = new ChooseCardsSkins(this); ChooseSkinCards.TopLevel = false; pnlChooseSkinCards.Controls.Add(ChooseSkinCards); ChooseSkinCards.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None; ChooseSkinCards.Dock = DockStyle.Fill; ChooseSkinCards.Show(); }