Appearance Constants
| Constant | Value | Description |
| dblFlat | 0 | Flat appearance of DataList or DBCombo control. |
| dbl3D | 1 | Three-dimensional appearance of DataList or DBCombo control. |
Area Constants (DBCombo Only)
| Constant | Value | Description |
| dbcAreaButton | 0 | Returns the location of the DBCombo control's button when a Click or Double-Click event occurs there. |
| dbcAreaEdit | 1 | Returns the location of the DBCombo control's text box when a Click or Double-Click event occurs there. |
| dbcAreaList | 2 | Returns the location of the DBCombo control's list box when a Click or Double-Click event occurs there. |
Match Entry Constants
| Constant | Value | Description |
| dblBasicMatching | 0 | Basic matching |
| dblExtendedMatching | 1 | Extended matching |
Mousepointer Constants
| Constant | Value | Description |
| dblDefault | 0 | (Default) Shape determined by the object |
| dblArrow | 1 | Arrow |
| dblCross | 2 | Cross (cross-hair pointer) |
| dblIBeam | 3 | I-Beam |
| dblIcon | 4 | Icon (small square within a square) |
| dblSize | 5 | Size (four-pointed arrow pointing north, south, east, and west) |
| dblSizeNESW | 6 | Size NE SW (double arrow pointing northeast and southwest) |
| dblSizeNS | 7 | Size N S (double arrow pointing north and south) |
| dblSizeNWSE | 8 | Size NW SE (double arrow pointing northwest and southeast) |
| dblSizeEW | 9 | Size E W (double arrow pointing east and west) |
| dblUpArrow | 10 | Up Arrow |
| dblHourglass | 11 | Hourglass (wait) |
| dblNoDrop | 12 | No Drop |
| dblArrowHourglass | 13 | Arrow and hourglass |
| dblArrowQuestion | 14 | Arrow and question mark |
| dblSizeAll | 15 | Size all |
| dblCustom | 99 | Custom icon specified by the MouseIcon property |
Style Constants
| Constant | Value | Description |
| dbcDropdownCombo | 0 | Drop-down combo |
| dbcSimpleCombo | 1 | Simple combo |
| dbcDropdownList | 2 | Drop-down list |
OLE Drag Constants
| Constant | Value | Description |
| dblOLEDragManual | 0 | Manual dragging |
| dblOLEDragAutomatic | 1 | Automatic |
OLE Drop Effect Constants
| Constant | Value | Description |
| dblOLEDropEffectNone | 0 | Drop target cannot accept the data |
| dblOLEDropEffectCopy | 1 | Drop results in a copy; the original data is untouched by the drag source. |
| dblOLEDropEffectMove | 2 | Drag source should remove the data |
| dblOLEDropEffectScroll | -2147483648 | Scrolling is about to start or is currently occurring in the target; this value is used in addition to the other values |
OLE Drop Constants
| Constant | Value | Description |
| dblOLEDropNone | 0 | Don't allow drops |
| dblOLEDropManual | 1 | Manual |
Drag Over Constants
| Constant | Value | Description |
| dblEnter | 0 | OLE object is being dragged within the range of a target |
| dblLeave | 1 | OLE object is being dragged out of the range of a target |
| dblOver | 2 | OLE object has moved from one position in the target to another |
Clipboard Constants
| Constant | Value | Description |
| dblCFText | 1 | Text |
| dblCFBitmap | 2 | Bitmap (.bmp file) |
| dblCFMetafile | 3 | Metafile (.wmf file) |
| dblCFDIB | 8 | Device-independent bitmap (DIB) |
| dblCFPalette | 9 | Color palette |
| dblCFEMetafile | 14 | Enhanced Metafile (EMF files) |
| dblCFFiles | 15 | List of Files |
| dblCFRTF | -16639 | Rich Text Format (.rtf file) |
Error Constants
| Constant | Value | Description |
| dblDataNotSetForFormat | 676 | Requested data was not supplied to the DataObject during the OLESetData event. |
| dblDataObjectLocked | 672 | DataObject formats list may not be cleared or expanded outside of the OLEStartDrag event. |
| dblExpectedAnArgument | 673 | Expected at least one argument. |
| dblFormatNotByteArray | 675 | Non-intrinsic OLE drag and drop formats used with SetData require Byte array data. GetData may return more bytes than were given to SetData. |
| dblGetNotSupported | 394 | Property is write-only. |
| dblInvalidObjectUse | 425 | Invalid object use. |
| dblInvalidProcedureCall | 5 | Invalid procedure call. |
| dblInvalidPropertyValue | 380 | Invalid property value. |
| dblOutOfMemory | 7 | Out of memory. |
| dblRecursiveOleDrag | 674 | Illegal recursive invocation of OLE drag and drop. |
| dblSetNotPermitted | 387 | Property can't be set on this control. |
| dblWrongClipboardFormat | 461 | Specified format doesn't match format or date. |