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ComboBoxから継承したカスタムコンボボックスを作成しようとしていましたが、DropDownBoxスタイルでいくつかの問題が発生しました。私はcodeproject.comのカスタムコンボボックスのコードをいくつか見つけました。コンボボックスにはいくつかの問題があったため、少し改良しました。カスタムコンボボックスがForm1.designer.csにアイテムコレクションを保存しない
私はmomemntで1つの問題しか持っていません。 Itemsコレクションにアイテムを追加すると、アイテムは通常のコンボボックスのようにForm1.designed.csファイル（cheetahComboBox1.Items.AddRange）に保存されないため、実行時にそこには存在しません。私は何かが恋しいですか？追加する必要がある属性はありますか？
更新：申し訳ありませんが、私はので、長さのソースを切り捨てなければならなかった、私は除外してきた。ここItemsコレクション の一部ではない非esentialコードの一部は、コンボボックスのソースです：
namespace Cheetah.UI.Custom
{
public class CheetahComboBox : ListControl
{
private bool hovered = false;
private bool pressed = false;
private bool resize = false;
private Color _backColor = Color.Black;
private Color _foreColor = Color.Yellow;
private Color _bordercolor = Color.Gray;
private int _dropDownHeight = 200;
private int _dropDownWidth = 0;
private int _maxDropDownItems = 8;
private int _selectedIndex = -1;
private bool _isDroppedDown = false;
private bool _popupclosedcalled = false;
private ComboBoxStyle _dropDownStyle = ComboBoxStyle.DropDownList;
private Rectangle rectBtn = new Rectangle(0, 0, 1, 1);
private Rectangle rectContent = new Rectangle(0, 0, 1, 1);
private ToolStripControlHost _controlHost;
private ListBox _listBox;
private ToolStripDropDown _popupControl;
private TextBox _textBox;
public Color BorderColor
{
get { return _bordercolor; }
set { _bordercolor = value; Invalidate(true); }
}
public int DropDownHeight
{
get { return _dropDownHeight; }
set { _dropDownHeight = value; }
}
[Editor("System.Windows.Forms.Design.StringCollectionEditor, System.Design", "System.Drawing.Design.UITypeEditor, System.Drawing")]
public ListBox.ObjectCollection Items
{
get { return _listBox.Items; }
}
public override Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
_listBox.ForeColor = value;
_textBox.ForeColor = value;
Invalidate();
}
}
public ComboBoxStyle DropDownStyle
{
get { return _dropDownStyle; }
set
{
_dropDownStyle = value;
if (_dropDownStyle == ComboBoxStyle.DropDownList)
{
if (_listBox.SelectedIndex < 0)
{
_textBox.Text = "";
base.Text = "";
}
_textBox.Visible = false;
}
else
{
_textBox.Visible = true;
}
Invalidate(true);
}
}
public new Color BackColor
{
get { return _backColor; }
set
{
this._backColor = value;
_textBox.BackColor = value;
_listBox.BackColor = value;
Invalidate(true);
}
}
public bool IsDroppedDown
{
get { return _isDroppedDown; }
set
{
if (_isDroppedDown == true && value == false)
{
if (_popupControl.IsDropDown)
{
_popupControl.Close();
}
}
_isDroppedDown = value;
if (_isDroppedDown)
{
_controlHost.Control.Width = _dropDownWidth;
_listBox.Refresh();
if (_listBox.Items.Count > 0)
{
int h = 0;
int i = 0;
int maxItemHeight = 0;
int highestItemHeight = 0;
foreach(object item in _listBox.Items)
{
int itHeight = _listBox.GetItemHeight(i);
if (highestItemHeight < itHeight)
{
highestItemHeight = itHeight;
}
h = h + itHeight;
if (i <= (_maxDropDownItems - 1))
{
maxItemHeight = h;
}
i = i + 1;
}
if (maxItemHeight > _dropDownHeight)
_listBox.Height = _dropDownHeight + 3;
else
{
if (maxItemHeight > highestItemHeight)
_listBox.Height = maxItemHeight + 3;
else
_listBox.Height = highestItemHeight + 3;
}
}
else
{
_listBox.Height = 15;
}
_popupControl.Show(this, CalculateDropPosition(), ToolStripDropDownDirection.BelowRight);
}
Invalidate();
if (_isDroppedDown)
OnDroppedDown(this, EventArgs.Empty);
}
}
public CheetahComboBox()
{
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.ContainerControl, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
SetStyle(ControlStyles.ResizeRedraw, true);
SetStyle(ControlStyles.Selectable, true);
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.UserMouse, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.Selectable, true);
base.BackColor = Color.Transparent;
this.Height = 21;
this.Width = 95;
this.SuspendLayout();
_textBox = new TextBox();
_textBox.BorderStyle = System.Windows.Forms.BorderStyle.None;
_textBox.Location = new System.Drawing.Point(3, 4);
_textBox.Size = new System.Drawing.Size(60, 13);
_textBox.TabIndex = 0;
_textBox.ForeColor = Color.Yellow;
_textBox.BackColor = Color.Black;
_textBox.WordWrap = false;
_textBox.Margin = new Padding(0);
_textBox.Padding = new Padding(0);
_textBox.TextAlign = HorizontalAlignment.Left;
this.Controls.Add(_textBox);
this.ResumeLayout(false);
AdjustControls();
_listBox = new ListBox();
_listBox.IntegralHeight = true;
_listBox.BorderStyle = BorderStyle.FixedSingle;
_listBox.SelectionMode = SelectionMode.One;
_listBox.BindingContext = new BindingContext();
_controlHost = new ToolStripControlHost(_listBox);
_controlHost.Padding = new Padding(0);
_controlHost.Margin = new Padding(0);
_controlHost.AutoSize = false;
_popupControl = new ToolStripDropDown();
_popupControl.Padding = new Padding(0);
_popupControl.Margin = new Padding(0);
_popupControl.AutoSize = true;
_popupControl.DropShadowEnabled = false;
_popupControl.Items.Add(_controlHost);
_dropDownWidth = this.Width;
_listBox.MeasureItem += new MeasureItemEventHandler(_listBox_MeasureItem);
_listBox.DrawItem += new DrawItemEventHandler(_listBox_DrawItem);
_listBox.MouseClick += new MouseEventHandler(_listBox_MouseClick);
_listBox.MouseMove += new MouseEventHandler(_listBox_MouseMove);
_popupControl.Closed += new ToolStripDropDownClosedEventHandler(_popupControl_Closed);
_textBox.Resize += new EventHandler(_textBox_Resize);
_textBox.TextChanged += new EventHandler(_textBox_TextChanged);
}
protected override void OnDisplayMemberChanged(EventArgs e)
{
_listBox.DisplayMember = this.DisplayMember;
this.SelectedIndex = this.SelectedIndex;
base.OnDisplayMemberChanged(e);
}
protected override void OnEnabledChanged(EventArgs e)
{
Invalidate(true);
base.OnEnabledChanged(e);
}
protected override void OnForeColorChanged(EventArgs e)
{
_textBox.ForeColor = this.ForeColor;
base.OnForeColorChanged(e);
}
protected override void OnFormatInfoChanged(EventArgs e)
{
_listBox.FormatInfo = this.FormatInfo;
base.OnFormatInfoChanged(e);
}
protected override void OnFormatStringChanged(EventArgs e)
{
_listBox.FormatString = this.FormatString;
base.OnFormatStringChanged(e);
}
protected override void OnFormattingEnabledChanged(EventArgs e)
{
_listBox.FormattingEnabled = this.FormattingEnabled;
base.OnFormattingEnabledChanged(e);
}
public override Font Font
{
get
{
return base.Font;
}
set
{
resize = true;
_textBox.Font = value;
base.Font = value;
Invalidate(true);
}
}
protected override void OnControlAdded(ControlEventArgs e)
{
e.Control.MouseDown += new MouseEventHandler(Control_MouseDown);
e.Control.MouseEnter += new EventHandler(Control_MouseEnter);
e.Control.MouseLeave += new EventHandler(Control_MouseLeave);
e.Control.GotFocus += new EventHandler(Control_GotFocus);
e.Control.LostFocus += new EventHandler(Control_LostFocus);
base.OnControlAdded(e);
}
protected override void OnMouseEnter(EventArgs e)
{
hovered = true;
this.Invalidate(true);
base.OnMouseEnter(e);
}
protected override void OnMouseLeave(EventArgs e)
{
if (!this.RectangleToScreen(this.ClientRectangle).Contains(MousePosition))
{
hovered = false;
Invalidate(true);
}
base.OnMouseLeave(e);
}
protected override void OnMouseDown(MouseEventArgs e)
{
if (_popupclosedcalled)
{
_popupclosedcalled = false;
return;
}
_textBox.Focus();
if ((this.RectangleToScreen(rectBtn).Contains(MousePosition) || (DropDownStyle == ComboBoxStyle.DropDownList)))
{
pressed = true;
this.Invalidate(true);
if (this.IsDroppedDown)
{
this.IsDroppedDown = false;
}
this.IsDroppedDown = true;
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
pressed = false;
if (! this.RectangleToScreen(this.ClientRectangle).Contains(MousePosition))
hovered = false;
else
hovered = true;
Invalidate();
}
protected override void OnMouseWheel(MouseEventArgs e)
{
if (e.Delta < 0)
this.SelectedIndex = this.SelectedIndex + 1;
else if (e.Delta > 0)
{
if (this.SelectedIndex > 0)
this.SelectedIndex = this.SelectedIndex - 1;
}
base.OnMouseWheel(e);
}
protected override void OnGotFocus(EventArgs e)
{
Invalidate(true);
base.OnGotFocus(e);
}
protected override void OnLostFocus(EventArgs e)
{
if (!this.ContainsFocus)
{
Invalidate();
}
base.OnLostFocus(e);
}
protected override void OnSelectedIndexChanged(EventArgs e)
{
if(SelectedIndexChanged!=null)
SelectedIndexChanged(this, e);
base.OnSelectedIndexChanged(e);
}
protected override void OnValueMemberChanged(EventArgs e)
{
_listBox.ValueMember = this.ValueMember;
this.SelectedIndex = this.SelectedIndex;
base.OnValueMemberChanged(e);
}
protected override void OnPaint(PaintEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
//draw component background
e.Graphics.FillRectangle(new SolidBrush(BackColor), Rectangle.FromLTRB(0, 0, Width, Height));
//text
if (DropDownStyle == ComboBoxStyle.DropDownList)
{
StringFormat sf = new StringFormat(StringFormatFlags.NoWrap);
sf.Alignment = StringAlignment.Near;
Rectangle rectText = _textBox.Bounds;
rectText.Offset(-3, 0);
SolidBrush foreBrush = new SolidBrush(ForeColor);
if (Enabled)
{
e.Graphics.DrawString(_textBox.Text, this.Font, foreBrush, rectText.Location);
}
//else
//{
// ControlPaint.DrawStringDisabled(e.Graphics, _textBox.Text, Font, BackColor, rectText, sf);
//}
}
//content border
Rectangle rectCont = rectContent;
rectCont.X += 1;
rectCont.Y += 1;
rectCont.Width -= 3;
rectCont.Height -= 3;
e.Graphics.DrawRectangle(new Pen(_bordercolor), Rectangle.FromLTRB(1, 1, Width - 2, Height - 2));
// if (this.SelectedIndex >= 0 && DropDownStyle == ComboBoxStyle.DropDownList)
// e.Graphics.DrawString(Items[this.SelectedIndex].ToString(), this.Font, new SolidBrush(this.ForeColor), new PointF(3, 3));
// e.Graphics.DrawImage(FUpButtonPicture, Rectangle.FromLTRB(Width - 17, 4, Width - 3, Height - 4));
//button border
Rectangle rectButton = rectBtn;
rectButton.X += 1;
rectButton.Y += 1;
rectButton.Width -= 3;
rectButton.Height -= 3;
if (IsDroppedDown)
{
if (FDownButtonPicture != null)
e.Graphics.DrawImage(FDownButtonPicture, Rectangle.FromLTRB(Width - 17, 4, Width - 3, Height - 4));
else
DrawButtonAndGlimph(e);
}
else
if (FUpButtonPicture != null)
e.Graphics.DrawImage(FUpButtonPicture, Rectangle.FromLTRB(Width - 17, 4, Width - 3, Height - 4));
else
DrawButtonAndGlimph(e);
e.Graphics.ResetTransform();
}
public override int SelectedIndex
{
get { return _selectedIndex; }
set
{
if(_listBox != null)
{
if (_listBox.Items.Count == 0)
return;
if ((this.DataSource != null) && value == -1)
return;
if (value <= (_listBox.Items.Count - 1) && value >= -1)
{
_listBox.SelectedIndex = value;
_selectedIndex = value;
//SelectedItem = _listBox.SelectedItem;
_textBox.Text = _listBox.GetItemText(_listBox.SelectedItem);
base.Text = _textBox.Text;
OnSelectedIndexChanged(EventArgs.Empty);
}
else
{
_textBox.Text = "";
base.Text = "";
OnSelectedIndexChanged(EventArgs.Empty);
}
Invalidate();
}
}
}
public object SelectedItem
{
get { return _listBox.SelectedItem; }
set
{
_listBox.SelectedItem = value;
this.SelectedIndex = _listBox.SelectedIndex;
if (SelectedIndex >= 0)
_textBox.Text = _listBox.Items[SelectedIndex].ToString();
else
_textBox.Text = "";
Invalidate();
}
}
public new object SelectedValue
{
get { return base.SelectedValue; }
set
{
base.SelectedValue = value;
}
}
protected override void RefreshItem(int index)
{
//throw new Exception("The method or operation is not implemented.");
}
protected override void SetItemsCore(IList items)
{
}
void Control_LostFocus(object sender, EventArgs e)
{
OnLostFocus(e);
}
void Control_GotFocus(object sender, EventArgs e)
{
OnGotFocus(e);
}
void Control_MouseLeave(object sender, EventArgs e)
{
OnMouseLeave(e);
}
void Control_MouseEnter(object sender, EventArgs e)
{
OnMouseEnter(e);
}
void Control_MouseDown(object sender, MouseEventArgs e)
{
OnMouseDown(e);
}
void _listBox_MouseMove(object sender, MouseEventArgs e)
{
int i;
for (i = 0; i < (_listBox.Items.Count); i++)
{
if (_listBox.GetItemRectangle(i).Contains(_listBox.PointToClient(MousePosition)))
{
_listBox.SelectedIndex = i;
return;
}
}
}
void _listBox_MouseClick(object sender, MouseEventArgs e)
{
if (_listBox.Items.Count == 0)
return;
if (_listBox.SelectedItems.Count != 1)
return;
this.SelectedIndex = _listBox.SelectedIndex;
if (DropDownStyle == ComboBoxStyle.DropDownList)
{
this.Invalidate(true);
}
IsDroppedDown = false;
}
void _popupControl_Closed(object sender, ToolStripDropDownClosedEventArgs e)
{
_isDroppedDown = false;
_popupclosedcalled = true;
pressed = false;
if (!this.RectangleToScreen(this.ClientRectangle).Contains(MousePosition))
{
hovered = false;
}
Invalidate(true);
}
void _textBox_TextChanged(object sender, EventArgs e)
{
OnTextChanged(e);
}
private void AdjustControls()
{
this.SuspendLayout();
resize = true;
_textBox.Top = 4;
_textBox.Left = 5;
this.Height = _textBox.Top + _textBox.Height + _textBox.Top;
rectBtn = new Rectangle(this.ClientRectangle.Width - 18, this.ClientRectangle.Top, 18, _textBox.Height + 2 * _textBox.Top);
_textBox.Width = rectBtn.Left - 1 - _textBox.Left;
rectContent = new Rectangle(ClientRectangle.Left, ClientRectangle.Top,
ClientRectangle.Width, _textBox.Height + 2 * _textBox.Top);
this.ResumeLayout();
Invalidate(true);
}
public virtual void OnDroppedDown(object sender, EventArgs e)
{
if (DroppedDown != null)
{
DroppedDown(this, e);
}
}
}
}
プロパティをシリアル化することは、正しい用語です。私が言ったように、これに新しい。私がまだよく知っていなければならない多くの用語： – Jaques