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;
}
Rectangle dropDownButtonRect = new Rectangle(0, 0, Width, Height);
if (cbState == ComboBoxState.Normal)
{
pevent.Graphics.FillRectangle(SystemBrushes.Window, dropDownButtonRect);
}
if (!DpiHelper.EnableDpiChangedHighDpiImprovements)
{
ComboBoxRenderer.DrawDropDownButton(pevent.Graphics, dropDownButtonRect, cbState);
}
else
{
ComboBoxRenderer.DrawDropDownButtonForHandle(pevent.Graphics, dropDownButtonRect, cbState, this.HandleInternal);
}
if (AccessibilityImprovements.Level1)
{
// Redraw focus cues
// For consistency with other PropertyGrid buttons, i.e. those opening system dialogs ("..."), that always show visual cues when focused,
// we need to do the same for this custom button, painted as ComboBox control part (drop-down).
if (Focused)
{
dropDownButtonRect.Inflate(-1, -1);
ControlPaint.DrawFocusRectangle(pevent.Graphics, dropDownButtonRect, ForeColor, BackColor);
}
}
}
}
protected override void OnPaint(PaintEventArgs pevent)
{
base.OnPaint(pevent);
if (Application.RenderWithVisualStyles & _useComboBoxTheme)
{
ComboBoxState state = ComboBoxState.Normal;
if (MouseIsDown)
{
state = ComboBoxState.Pressed;
}
else if (MouseIsOver)
{
state = ComboBoxState.Hot;
}
Rectangle dropDownButtonRect = new Rectangle(0, 0, Width, Height);
if (state == ComboBoxState.Normal)
{
pevent.Graphics.FillRectangle(SystemBrushes.Window, dropDownButtonRect);
}
using (var hdc = new DeviceContextHdcScope(pevent))
{
ComboBoxRenderer.DrawDropDownButtonForHandle(
hdc,
dropDownButtonRect,
state,
DpiHelper.IsScalingRequirementMet ? HandleInternal : IntPtr.Zero);
}
// Redraw focus cues.
//
// For consistency with other PropertyGrid buttons, i.e. those opening system dialogs ("..."), that
// always show visual cues when focused, we need to do the same for this custom button, painted as
// a ComboBox control part (drop-down).
if (Focused)
{
dropDownButtonRect.Inflate(-1, -1);
ControlPaint.DrawFocusRectangle(pevent.Graphics, dropDownButtonRect, ForeColor, BackColor);
}
}
}
