private Program() { SuspendLayout(); // イベント PreviewKeyDown += Form_KeyDown; MouseDown += Form_MouseDown; MouseMove += Form_MouseMove; MouseUp += Form_MouseUp; // Looks and Feel StartPosition = FormStartPosition.Manual; FormBorderStyle = FormBorderStyle.None; BackColor = Color.Black; Cursor = Cursors.Cross; ShowInTaskbar = false; ControlBox = false; TopMost = true; // コンテキストメニュー var contextMenu = new ContextMenuStrip(); contextMenu.Items.Add(doUpload = new ToolStripMenuItem("アップロード (Shift)")); contextMenu.Items.Add(doSave = new ToolStripMenuItem("ファイルに保存 (Ctrl)")); doUpload.Click += toggle; doSave.Click += toggle; void toggle(object sender, EventArgs _) { ((ToolStripMenuItem)sender).Checked = !((ToolStripMenuItem)sender).Checked; } ContextMenuStrip = contextMenu; // 最大化 Location = new Point(region.X, region.Y); Size = region.Size; // 透明化 var margins = new int[] { 0, 0, Width, Height }; RenderUtil.DwmExtendFrameIntoClientArea(Handle, ref margins); // レンダリング最適化 SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.DoubleBuffer, true); ResumeLayout(false); }