DropDownButton.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / PropertyGridInternal / DropDownButton.cs / 1 / DropDownButton.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Windows.Forms.PropertyGridInternal { 
 
    using System.Diagnostics;
    using System; 
    using System.Drawing;

    using System.ComponentModel;
    using System.Windows.Forms; 
    using System.Windows.Forms.VisualStyles;
    using System.Windows.Forms.ButtonInternal; 
    using Microsoft.Win32; 

    internal sealed class DropDownButton : Button { 

        private bool useComboBoxTheme = false;

        private bool ignoreMouse; 

        public DropDownButton() { 
            SetStyle(ControlStyles.Selectable, true); 
            this.AccessibleName = SR.GetString(SR.PropertyGridDropDownButtonAccessibleName);
        } 


        // VSWhidbey 375220 - when the holder is open, we don't fire clicks
        // 
        public bool IgnoreMouse {

            get { 
                return ignoreMouse; 
            }
            set { 
                ignoreMouse = value;
            }
        }
 
        public bool UseComboBoxTheme {
            set { 
                if (useComboBoxTheme != value) { 
                    useComboBoxTheme = value;
                    Invalidate(); 
                }
            }
        }
 
        protected override void OnClick(EventArgs e) {
            if (!IgnoreMouse) { 
                base.OnClick(e); 
            }
        } 

        protected override void OnMouseUp(MouseEventArgs e) {
            if (!IgnoreMouse) {
                base.OnMouseUp(e); 
            }
        } 
 
        protected override void OnMouseDown(MouseEventArgs e) {
            if (!IgnoreMouse) { 
                base.OnMouseDown(e);
            }
        }
 

        protected override void OnPaint(PaintEventArgs pevent) { 
            base.OnPaint(pevent); 

            if (Application.RenderWithVisualStyles & useComboBoxTheme) { 
                ComboBoxState cbState = ComboBoxState.Normal;

                if (base.MouseIsDown) {
                    cbState = ComboBoxState.Pressed; 
                }
                else if (base.MouseIsOver) { 
                    cbState = ComboBoxState.Hot; 
                }
 
                ComboBoxRenderer.DrawDropDownButton(pevent.Graphics, new Rectangle(0,0,Width,Height), cbState);
            }
        }
 
        internal override ButtonBaseAdapter CreateStandardAdapter() {
            return new DropDownButtonAdapter(this); 
        } 
    }
 
    internal class DropDownButtonAdapter : ButtonStandardAdapter {

        internal DropDownButtonAdapter(ButtonBase control) : base(control) {}
 
        private void DDB_Draw3DBorder(System.Drawing.Graphics g, Rectangle r, bool raised) {
            if (Control.BackColor != SystemColors.Control && SystemInformation.HighContrast) { 
                if (raised) { 
                    Color c = ControlPaint.LightLight(Control.BackColor);
                    ControlPaint.DrawBorder(g, r, 
                                            c, 1, ButtonBorderStyle.Outset,
                                            c, 1, ButtonBorderStyle.Outset,
                                            c, 2, ButtonBorderStyle.Inset,
                                            c, 2, ButtonBorderStyle.Inset); 
                }
                else { 
                    ControlPaint.DrawBorder(g, r, ControlPaint.Dark(Control.BackColor), ButtonBorderStyle.Solid); 
                }
            } 
            else {
                if (raised) {
                    Color c = ControlPaint.Light(Control.BackColor);
                    ControlPaint.DrawBorder(g, r, 
                                            c, 1, ButtonBorderStyle.Solid,
                                            c, 1, ButtonBorderStyle.Solid, 
                                            Control.BackColor, 2, ButtonBorderStyle.Outset, 
                                            Control.BackColor, 2, ButtonBorderStyle.Outset);
 
                    Rectangle inside = r;
                    inside.Offset(1,1);
                    inside.Width -= 3;
                    inside.Height -= 3; 
                    c = ControlPaint.LightLight(Control.BackColor);
                    ControlPaint.DrawBorder(g, inside, 
                                            c, 1, ButtonBorderStyle.Solid, 
                                            c, 1, ButtonBorderStyle.Solid,
                                            c, 1, ButtonBorderStyle.None, 
                                            c, 1, ButtonBorderStyle.None);
                }
                else {
                    ControlPaint.DrawBorder(g, r, ControlPaint.Dark(Control.BackColor), ButtonBorderStyle.Solid); 
                }
            } 
        } 

        internal override void PaintUp(PaintEventArgs pevent, CheckState state) { 
            base.PaintUp(pevent, state);
            if (!Application.RenderWithVisualStyles) {
                DDB_Draw3DBorder(pevent.Graphics, Control.ClientRectangle, true);
            } 
            else {
                Color c = SystemColors.Window; 
                Rectangle rect = Control.ClientRectangle; 
                rect.Inflate(0, -1);
                ControlPaint.DrawBorder(pevent.Graphics, rect, 
                                        c, 1, ButtonBorderStyle.None,
                                        c, 1, ButtonBorderStyle.None,
                                        c, 1, ButtonBorderStyle.Solid,
                                        c, 1, ButtonBorderStyle.None); 
            }
        } 
 
        internal override void DrawImageCore(Graphics graphics, Image image, Rectangle imageBounds, Point imageStart, ButtonBaseAdapter.LayoutData layout) {
             ControlPaint.DrawImageReplaceColor(graphics, image, imageBounds, Color.Black, Control.ForeColor); 
             //ControlPaint.DrawImageColorized(graphics, image, imageBounds , Control.ForeColor);
        }
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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