protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle r = new Rectangle(ClientSize.Width - 16, 1, 16, 18);
ControlPaint.DrawComboButton(g, r, Drop ? ButtonState.Pushed : ButtonState.Normal);
}
/// <summary>
/// Paints the control.
/// </summary>
/// <param name="e">The <see cref="PaintEventArgs"/> instance containing the event data.</param>
protected virtual void PaintControl(PaintEventArgs e)
{
var cbi = NativeMethods.COMBOBOXINFO.FromComboBox(this);
var itemText = SelectedIndex >= 0 ? GetItemText(SelectedItem) : string.Empty;
var state = Enabled ? currentState : ComboBoxState.Disabled;
Rectangle tr = cbi.rcItem;
/*Rectangle tr = this.ClientRectangle;
* tr.Width -= (SystemInformation.VerticalScrollBarWidth + 2);
* tr.Inflate(0, -2);
* tr.Offset(1, 0);*/
Rectangle br = cbi.rcButton;
var vsSuccess = false;
if (VisualStyleRenderer.IsSupported && Application.RenderWithVisualStyles)
{
/*Rectangle r = Rectangle.Inflate(this.ClientRectangle, 1, 1);
* if (this.DropDownStyle != ComboBoxStyle.DropDownList)
* {
* e.Graphics.Clear(this.BackColor);
* ComboBoxRenderer.DrawTextBox(e.Graphics, r, itemText, this.Font, tr, tff, state);
* ComboBoxRenderer.DrawDropDownButton(e.Graphics, br, state);
* }
* else*/
{
try
{
var vr = new VisualStyleRenderer("Combobox", DropDownStyle == ComboBoxStyle.DropDownList ? 5 : 4, (int)state);
vr.DrawParentBackground(e.Graphics, ClientRectangle, this);
vr.DrawBackground(e.Graphics, ClientRectangle);
if (DropDownStyle != ComboBoxStyle.DropDownList)
{
br.Inflate(1, 1);
}
var cr = DropDownStyle == ComboBoxStyle.DropDownList ? Rectangle.Inflate(br, -1, -1) : br;
vr.SetParameters("Combobox", 7, (int)(br.Contains(PointToClient(Cursor.Position)) ? state : ComboBoxState.Normal));
vr.DrawBackground(e.Graphics, br, cr);
if (Focused && State != ComboBoxState.Pressed)
{
var sz = TextRenderer.MeasureText(e.Graphics, "Wg", Font, tr.Size, TextFormatFlags.Default);
var fr = Rectangle.Inflate(tr, 0, (sz.Height - tr.Height) / 2 + 1);
ControlPaint.DrawFocusRectangle(e.Graphics, fr);
}
var fgc = Enabled ? ForeColor : SystemColors.GrayText;
TextRenderer.DrawText(e.Graphics, itemText, Font, tr, fgc, tff);
vsSuccess = true;
}
catch { }
}
}
if (!vsSuccess)
{
Diagnostics.Debug.WriteLine($"CR:{ClientRectangle};ClR:{e.ClipRectangle};Foc:{Focused};St:{state};Tx:{itemText}");
var focusedNotPressed = Focused && state != ComboBoxState.Pressed;
var bgc = Enabled ? (focusedNotPressed ? SystemColors.Highlight : BackColor) : SystemColors.Control;
var fgc = Enabled ? (focusedNotPressed ? SystemColors.HighlightText : ForeColor) : SystemColors.GrayText;
e.Graphics.Clear(bgc);
ControlPaint.DrawBorder3D(e.Graphics, ClientRectangle, Border3DStyle.Sunken);
ControlPaint.DrawComboButton(e.Graphics, br, Enabled ? (state == ComboBoxState.Pressed ? ButtonState.Pushed : ButtonState.Normal) : ButtonState.Inactive);
tr = new Rectangle(tr.X + 3, tr.Y + 1, tr.Width - 4, tr.Height - 2);
TextRenderer.DrawText(e.Graphics, itemText, Font, tr, fgc, tff);
if (focusedNotPressed)
{
var fr = Rectangle.Inflate(cbi.rcItem, -1, -1);
fr.Height++;
fr.Width++;
ControlPaint.DrawFocusRectangle(e.Graphics, fr, fgc, bgc);
e.Graphics.DrawRectangle(SystemPens.Window, cbi.rcItem);
}
}
}
/// <summary>
/// Paints the control.
/// </summary>
/// <param name="e">The <see cref="PaintEventArgs"/> instance containing the event data.</param>
protected virtual void PaintControl(PaintEventArgs e)
{
var cbi = NativeMethods.COMBOBOXINFO.FromComboBox(this);
string itemText = this.SelectedIndex >= 0 ? this.GetItemText(this.SelectedItem) : string.Empty;
ComboBoxState state = Enabled ? currentState : ComboBoxState.Disabled;
Rectangle tr = cbi.rcItem;
/*Rectangle tr = this.ClientRectangle;
* tr.Width -= (SystemInformation.VerticalScrollBarWidth + 2);
* tr.Inflate(0, -2);
* tr.Offset(1, 0);*/
Rectangle br = cbi.rcButton;
bool vsSuccess = false;
if (VisualStyleRenderer.IsSupported && Application.RenderWithVisualStyles)
{
/*Rectangle r = Rectangle.Inflate(this.ClientRectangle, 1, 1);
* if (this.DropDownStyle != ComboBoxStyle.DropDownList)
* {
* e.Graphics.Clear(this.BackColor);
* ComboBoxRenderer.DrawTextBox(e.Graphics, r, itemText, this.Font, tr, tff, state);
* ComboBoxRenderer.DrawDropDownButton(e.Graphics, br, state);
* }
* else*/
{
try
{
var vr = new VisualStyleRenderer("Combobox", this.DropDownStyle == ComboBoxStyle.DropDownList ? 5 : 4, (int)state);
vr.DrawParentBackground(e.Graphics, this.ClientRectangle, this);
vr.DrawBackground(e.Graphics, this.ClientRectangle);
if (this.DropDownStyle != ComboBoxStyle.DropDownList)
{
br.Inflate(1, 1);
}
Rectangle cr = this.DropDownStyle == ComboBoxStyle.DropDownList ? Rectangle.Inflate(br, -1, -1) : br;
vr.SetParameters("Combobox", 7, (int)(br.Contains(this.PointToClient(Cursor.Position)) ? state : ComboBoxState.Normal));
vr.DrawBackground(e.Graphics, br, cr);
if (this.Focused && State != ComboBoxState.Pressed)
{
Size sz = TextRenderer.MeasureText(e.Graphics, "Wg", this.Font, tr.Size, TextFormatFlags.Default);
Rectangle fr = Rectangle.Inflate(tr, 0, ((sz.Height - tr.Height) / 2) + 1);
ControlPaint.DrawFocusRectangle(e.Graphics, fr);
}
TextRenderer.DrawText(e.Graphics, itemText, this.Font, tr, this.ForeColor, tff);
vsSuccess = true;
}
catch { }
}
}
if (!vsSuccess)
{
System.Diagnostics.Debug.WriteLine(string.Format("CR:{0};ClR:{1};Foc:{2};St:{3};Tx:{4}", ClientRectangle, e.ClipRectangle, this.Focused, state, itemText));
e.Graphics.Clear(this.BackColor);
ControlPaint.DrawBorder3D(e.Graphics, this.ClientRectangle, Border3DStyle.Sunken);
ControlPaint.DrawComboButton(e.Graphics, br, this.Enabled ? (state == ComboBoxState.Pressed ? ButtonState.Pushed : ButtonState.Normal) : ButtonState.Inactive);
//using (var bb = new SolidBrush(this.BackColor))
// e.Graphics.FillRectangle(bb, tr);
if (this.Focused)
{
Size sz = TextRenderer.MeasureText(e.Graphics, "Wg", this.Font, tr.Size, TextFormatFlags.Default);
Rectangle fr = Rectangle.Inflate(tr, 0, ((sz.Height - tr.Height) / 2) + 1);
e.Graphics.FillRectangle(SystemBrushes.Highlight, fr);
ControlPaint.DrawFocusRectangle(e.Graphics, fr); //, this.ForeColor, SystemColors.Highlight);
}
TextRenderer.DrawText(e.Graphics, itemText, this.Font, tr, this.Focused ? SystemColors.HighlightText : this.ForeColor, tff);
}
}
private void DrawButton(Graphics g)
{
ControlPaint.DrawComboButton(g, ClientSize.Width - ButtonSize.Width, 0, ButtonSize.Width, ButtonSize.Height, buttonState);
}