constants BackgroundPartEnum
The BackgroundPartEnum type indicates parts in the control. Use the Background property to specify a background color or a visual appearance for specific parts in the control. A Color expression that indicates the background color for a specified part. The last 7 bits in the high significant byte of the color to indicates the identifier of the skin being used. Use the Add method to add new skins to the control. If you need to remove the skin appearance from a part of the control you need to reset the last 7 bits in the high significant byte of the color being applied to the background's part.

NameValueDescription
exSplitBar18 Specifies the visual appearance for control's split bar.
exToolTipAppearance64 Specifies the visual appearance of the borders of the tooltips.
exToolTipBackColor65 Specifies the tooltip's background color.
exToolTipForeColor66 Specifies the tooltip's foreground color.
exCheckBoxState070 exCheckBoxState0. Specifies the visual appearance for the check box in 0 state (unchecked).
exCheckBoxState171 exCheckBoxState1. Specifies the visual appearance for the check box in 1 state (checked).
exCheckBoxState272 exCheckBoxState2. Specifies the visual appearance for the check box in 2 state (partial, not used).
exHSplitBar141 Specifies the visual appearance for horizontal split bar.
exCSplitBar142 Specifies the solid color / visual appearance of the split bar that creates new views.
exStatusBackColor168 Specifies the status bar's background color. The StatusBarVisible property specifies whether the control's status bar is visible or hidden. The StatusBarLabel property specifies the HTML label the control's status bar is displaying. 
exStatusForeColor169 Specifies the status bar's foreground color. The StatusBarVisible property specifies whether the control's status bar is visible or hidden. The StatusBarLabel property specifies the HTML label the control's status bar is displaying.
exSplitBarSize170 Specifies the size of the control's split bar, when resizing the cascade columns is enabled.
exDisableSplitBar171 Specifies the visual appearance for control's split bar, when resizing the cascade columns is disabled.
exDisableSplitBarSize172 Specifies the size of the control's split bar, when resizing the cascade columns is disabled.
exFocusFrame173 Specifies the visual appearance of the frame around the focusing cascade column.
exStatusPanelBackColor174 Specifies the status panel's background color. The StatusBarVisible property specifies whether the control's status bar is visible or hidden. The StatusBarLabel property specifies the HTML label the control's status bar is displaying.
exThumbnailBackColorAlt175 Specifies the alternate background color for thumbnail's view.
exThumbnailForeColorAlt176 Specifies the alternate foreground color for thumbnail's view.
exThumbnailBorderColor177 Specifies the color to show the thumbnail's border.
exThumbnailSelBorderColor178 Specifies the color to show the selected thumbnail.
exThumbnailSelBorderColorHide179 Specifies the color to show the selected thumbnail, while the control has no focus.
exTreeGlyphOpen180 Specifies the visual appearance for the +/- buttons when it is collapsed.
exTreeGlyphClose181 Specifies the visual appearance for the +/- buttons when it is expanded.
exColumnsPositionSign182 exColumnsPositionSign. Specifies the visual appearance for the position sign between columns, when the user changes the position of the column by drag an drop.
exTreeLinesColor186 exTreeLinesColor. Specifies the color to show the tree-lines (connecting lines from the parent to the children)
exVSUp256 The up button in normal state.
exVSUpP257 The up button when it is pressed.
exVSUpD258 The up button when it is disabled.
exVSUpH259 The up button when the cursor hovers it.
exVSThumb260 The thumb part (exThumbPart) in normal state.
exVSThumbP261 The thumb part (exThumbPart) when it is pressed.
exVSThumbD262 The thumb part (exThumbPart) when it is disabled.
exVSThumbH263 The thumb part (exThumbPart) when cursor hovers it.
exVSDown264 The down button in normal state.
exVSDownP265 The down button when it is pressed.
exVSDownD266 The down button when it is disabled.
exVSDownH267 The down button when the cursor hovers it.
exVSLower268 The lower part ( exLowerBackPart ) in normal state.
exVSLowerP269 The lower part ( exLowerBackPart ) when it is pressed.
exVSLowerD270 The lower part ( exLowerBackPart ) when it is disabled.
exVSLowerH271 The lower part ( exLowerBackPart ) when the cursor hovers it.
exVSUpper272 The upper part ( exUpperBackPart ) in normal state.
exVSUpperP273 The upper part ( exUpperBackPart ) when it is pressed.
exVSUpperD274 The upper part ( exUpperBackPart ) when it is disabled.
exVSUpperH275 The upper part ( exUpperBackPart ) when the cursor hovers it.
exVSBack276 The background part ( exLowerBackPart and exUpperBackPart ) in normal state.
exVSBackP277 The background part ( exLowerBackPart and exUpperBackPart ) when it is pressed.
exVSBackD278 The background part ( exLowerBackPart and exUpperBackPart ) when it is disabled.
exVSBackH279 The background part ( exLowerBackPart and exUpperBackPart ) when the cursor hovers it.
exHSLeft384 The left button in normal state.
exHSLeftP385 The left button when it is pressed.
exHSLeftD386 The left button when it is disabled.
exHSLeftH387 The left button when the cursor hovers it.
exHSThumb388 The thumb part (exThumbPart) in normal state.
exHSThumbP389 The thumb part (exThumbPart) when it is pressed.
exHSThumbD390 The thumb part (exThumbPart) when it is disabled.
exHSThumbH391 The thumb part (exThumbPart) when the cursor hovers it.
exHSRight392 The right button in normal state.
exHSRightP393 The right button when it is pressed.
exHSRightD394 The right button when it is disabled.
exHSRightH395 The right button when the cursor hovers it.
exHSLower396 The lower part (exLowerBackPart) in normal state.
exHSLowerP397 The lower part (exLowerBackPart) when it is pressed.
exHSLowerD398 The lower part (exLowerBackPart) when it is disabled.
exHSLowerH399 The lower part (exLowerBackPart) when the cursor hovers it.
exHSUpper400 The upper part (exUpperBackPart) in normal state.
exHSUpperP401 The upper part (exUpperBackPart) when it is pressed.
exHSUpperD402 The upper part (exUpperBackPart) when it is disabled.
exHSUpperH403 The upper part (exUpperBackPart) when the cursor hovers it.
exHSBack404 The background part (exLowerBackPart and exUpperBackPart) in normal state.
exHSBackP405 The background part (exLowerBackPart and exUpperBackPart) when it is pressed.
exHSBackD406 The background part (exLowerBackPart and exUpperBackPart) when it is disabled.
exHSBackH407 The background part (exLowerBackPart and exUpperBackPart) when the cursor hovers it.
exSBtn324 All button parts ( L1-L5, LButton, exThumbPart, RButton, R1-R6 ), in normal state.
exSBtnP325 All button parts ( L1-L5, LButton, exThumbPart, RButton, R1-R6 ), when it is pressed.
exSBtnD326 All button parts ( L1-L5, LButton, exThumbPart, RButton, R1-R6 ), when it is disabled.
exSBtnH327 All button parts ( L1-L5, LButton, exThumbPart, RButton, R1-R6 ), when the cursor hovers it .
exScrollHoverAll500 Enables or disables the hover-all feature. By default (Background(exScrollHoverAll) = 0), the left/top, right/bottom and thumb parts of the control' scrollbars are displayed in hover state while the cursor hovers any part of the scroll bar (hover-all feature). The hover-all feature is available on Windows 11 or greater, if only left/top, right/bottom, thumb, lower and upper-background parts of the scrollbar are visible, no custom visual-appearance is applied to any visible part. The hover-all feature is always on If Background(exScrollHoverAll) = -1. The Background(exScrollHoverAll) = 1 disables the hover-all feature.
exVSThumbExt503 The thumb-extension part in normal state.
exVSThumbExtP504 The thumb-extension part when it is pressed.
exVSThumbExtD505 The thumb-extension part when it is disabled.
exVSThumbExtH506 The thumb-extension when the cursor hovers it.
exHSThumbExt507 The thumb-extension in normal state.
exHSThumbExtP508 The thumb-extension when it is pressed.
exHSThumbExtD509 The thumb-extension when it is disabled.
exHSThumbExtH510 The thumb-extension when the cursor hovers it.
exScrollSizeGrip511 Specifies the visual appearance of the control's size grip when both scrollbars are shown.