TMlSkinComboBox

Notes

• The entries live in Values, and DropDownCount sets how many rows the list shows.
• The arrow uses two images, DropArrowNormal and DropArrowHot.
• The Menu… properties style the dropdown: frame colour, selected row background, text colours and so on.
• AutoComplete matches entries as the user types.

Example

From the demo MlSkin.Demo.滚动消息栏.v3.0 (.dfm form file)

object cbb1: TMlSkinComboBox
  Left = 51
  Top = 34
  Width = 78
  Height = 26
  Transparent = False
  Alpha = 255
  DoubleBuffered = False
  BorderEffectNormal = 'MlSkinBorderNormal'
  BorderEffectHot = 'MlSkinBorderHot'
  TabOrder = 0
  Items.Strings = (
  'aeQuad'
  'aeCirc'
  'aeBack'
  'aeBounce'
  'aeCubic'
  'aeElastic'
  'aeExpo'
  'aeQuart'

Properties 14

Name	Type	Default	Description
AutoComplete	Boolean	True	Matches entries automatically as the user types.
Items	TStrings	—	The control's collection of items, editable one by one in the Object Inspector.
ItemIndex	Integer	-1	Index of the selected item, starting at 0; -1 means none.
ItemHeight	Integer	—	Height of each item in pixels.
DropDownCount	Integer	8	How many rows the dropdown shows before scrolling.
DropArrowHot	TMlResID	—	Dropdown arrow image used on hover.
DropArrowNormal	TMlResID	—	Dropdown arrow image in the normal state.
Values	TStrings	—	The dropdown entries, one per line.
Style	TMlSkinCustomComboBoxStyle	csDropDown	Drawing style.
MenuFrameColor	TColor	$00F9B937	Frame colour of the dropdown list.
MenuItemSeletedColor	TColor	clHighLight	Background colour of the selected row in the dropdown.
MenuItemBackgroudColor	TColor	clWindow	Background colour of the dropdown list.
MenuItemSeletedFontColor	TColor	clHighlightText	Text colour of the selected row.
MenuItemNormalFontColor	TColor	clBlack	Text colour of the normal rows.

Events 6

Name	Type	Default	Description
OnListBoxDrawItem	TMlDrawSkinItemEvent	—	Fires while a dropdown row is drawn, so you can style it.
OnComboBoxDrawItem	TMlDrawSkinItemEvent	—	Fires while the selected value in the edit part is drawn.
OnChange	TNotifyEvent	—	Fires when the content changes.
OnClick	TNotifyEvent	—	Fires when the control is clicked.
OnCloseUp	TNotifyEvent	—	Fires when the dropdown closes.
OnDropDown	TNotifyEvent	—	Fires when the dropdown opens.

Properties of TMlSkinBorderPanel 3

Name	Type	Default	Description
ActiveHotFrame	Boolean	True	Enables the hover border: with it on, the panel switches to BorderEffectHot while the mouse is over it.
BorderEffectNormal	TMlResID	—	Border image in the normal state.
BorderEffectHot	TMlResID	—	Border image used while the mouse is over the panel.

Properties of TMlSkinPanel 16

Name	Type	Default	Description
Alpha	Byte	192	Opacity: 0 fully transparent, 255 opaque.
BorderAlpha	Byte	255	Border opacity from 0 (invisible) to 255 (solid), useful for a subtle divider.
BorderSides	TSides	—	Which border edges are drawn — any combination of top, bottom, left and right.
BorderColor	TColor	$00D9CBBA	Border color.
Color	TColor	clWhite	Background color of the control; ignored while Transparent is on.
CaptionVisible	Boolean	False	Whether the caption is drawn. Turn it off for icon-only buttons.
BackgroundFillType	TMlPngFillType	ftNormal	How the background image is laid out: ftNormal as-is, ftTile tiled, ftAutoStretch auto-stretched, ftCenter centred, ftStretch stretched to fill, ftGradient gradient.
BackgroundImage	TMlResID	—	Background image, given as a resource ID or an image file path.
BackgroundOffsetX	Integer	0	Horizontal offset of the background image in pixels.
BackgroundOffsetY	Integer	0	Vertical offset of the background image in pixels.
GradientDirection	TGradientDirection	gdVertical	Gradient direction: gdHorizontal or gdVertical.
GradientAlign	TGradientAlign	gaCenter	Where the gradient is anchored: centre, left or right.
GradientSize	Integer	60	Size of the gradient band in pixels.
GradientStartColor	TColor	$00FFC446	Starting color of the gradient.
GradientEndColor	TColor	$00FDF8F3	Ending color of the gradient.
DoubleBorder	Boolean	True	Double border: draws a second line inside the border.

Properties of TMlSkinCustomPanel 1

Name	Type	Default	Description
Color	TColor	clWhite	Background color of the control; ignored while Transparent is on.

Events of TMlSkinCustomPanel 1

Name	Type	Default	Description
OnCustomDraw	TMlCustomDrawEvent	—	Custom draw event: paint your own content after the control has drawn itself.

Properties of TMlSkinCustomControl 5

Name	Type	Default	Description
About	TMlAboutInfo	—	A design-time property: double-clicking it in the Object Inspector opens the MLSkin about box with the component version. It has no effect at run time and is not stored in the .dfm.
Transparent	Boolean	True	Transparent background: the control skips its own fill and shows the form background (image or color) instead.
Color	TColor	clWhite	Background color of the control; ignored while Transparent is on.
AutoInvalidate	Boolean	False	Repaints automatically when the content changes. Turn it on if property changes do not show up.
EraseBackground	Boolean	False	Whether the background is erased before painting; worth toggling if the control flickers.

Events of TMlSkinCustomControl 4

Name	Type	Default	Description
OnDPIChanged	TMlDPIChangedEvent	—	Fires when the screen DPI changes, for example when the window moves to a monitor with a different scaling — a good place to re-adjust anything you draw yourself.
OnBackgroundChanging	TMlBackgroundEvent	—	Fires just before the background changes, giving you a chance to adjust what is drawn.
OnBackgroundChanged	TMlCustomDrawEvent	—	Fires after the background has been drawn, so you can paint on top of it.
OnVisibleChanged	TNotifyEvent	—	Fires when the control is shown or hidden.

Only the properties and events MLSkin adds are listed here. Standard VCL properties such as Align, Anchors, Font and OnClick are available too and behave exactly as on the stock controls.