Rapid-Q Documentation by William Yu (c)1999-2000 | Appendix A: QCOMBOBOX |
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Field | Type | R/W | Default | Support |
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Align | INTEGER | RW | alNone | W |
Align determines how the control aligns within its parent control. | ||||
Color | INTEGER | RW | W | |
CopyMode | INTEGER | RW | cmBlackness | W |
Cursor | INTEGER | RW | crDefault | W |
DropDownCount | INTEGER | RW | 8 | W |
DropDownCount is the maximum number of items displayed in the drop-down list. | ||||
Enabled | INTEGER | RW | True | WXG |
Font | QFONT | W | W | |
Height | INTEGER | RW | WXG | |
Hint | STRING | RW | WXG | |
Item | ARRAY of STRING | RW | WXG | |
ItemCount | INTEGER | R | WXG | |
ItemHeight | INTEGER | RW | W | |
ItemIndex | INTEGER | RW | -1 | WXG |
ItemIndex indicates which item in the drop-down list is selected. If no item is selected, then ItemIndex is -1. | ||||
Left | INTEGER | RW | 0 | WXG |
MaxLength | INTEGER | RW | W | |
MaxLength is the maximum number of characters the user can type into the edit portion of the combobox. | ||||
Parent | QFORM/QPANEL/QTABCONTROL | W | WXG | |
PopupMenu | QPOPUPMENU | W | W | |
ShowHint | INTEGER | RW | False | WXG |
Sorted | INTEGER | RW | False | WG |
Style | INTEGER | RW | csDropDown | W |
Style determines the display style of the combobox. 0 = csDropDown -- A drop-down list with an edit box for manually entered text. 1 = csSimple -- A drop-down list with an edit box and a fixed list (list box) underneath. 2 = csDropDownList -- A drop-down list with no edit box for manual entry. 3 = csOwnerDrawFixed -- Owner-draw drop-down list with an edit box. Each item in the list is the height specified by the ItemHeight property. 4 = csOwnerDrawVariable -- Owner-draw drop-down list with an edit box. Each item can have varying heights. |
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TabOrder | INTEGER | RW | W | |
Tag | INTEGER | RW | WXG | |
Text | STRING | RW | W | |
Top | INTEGER | RW | 0 | WXG |
Visible | INTEGER | RW | True | WXG |
Width | INTEGER | RW | WXG |
Method | Type | Description | Params | Support |
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AddItems | SUBI | Add items to combobox | STRINGs, Infinite | WXG |
Circle | SUB (x1%, y1%, x2%, y2%, c%, fill%) | Draw & Fill Circle | 6 | W |
Clear | SUB | Clears entire Combobox | 0 | WXG |
CopyRect | SUB (D, Image, S) | D and S are QRECTs, Image can be a QImage, QCanvas, or QBitmap | 3 | W |
DelItems | SUBI | Delete items by their index | Index #s, Infinite | WXG |
Draw | SUB (x%, y%, BMP) | Draw Bitmap at (X,Y) | 3 | W |
FillRect | SUB (x1%, y1%, x2%, y2%, c%) | Draws & Fills a rectangle | 5 | W |
InsertItem | SUB (Index%, String$) | Insert item at Index% | 2 | WXG |
Line | SUB (x1%, y1%, x2%, y2%, c%) | Draws a line | 5 | W |
Paint | SUB (x%, y%, c%, borderc%) | Fill Region | 4 | W |
Pset | SUB (x%, y%, c%) | Pixel plot | 3 | W |
Rectangle | SUB (x1%, y1%, x2%, y2%, c%) | Draws a rectangle | 5 | W |
Repaint | SUB | Force repainting of combobox | 0 | W |
RoundRect | SUB (x1%, y1%, x2%, y2%, x3%, y3%, c%) | Draws & Fills a rounded rectangle | 7 | W |
StretchDraw | SUB (Rect AS QRECT, BMP) | Draw BMP and stretch to fit inside Rect | 2 | W |
TextHeight | FUNCTION (Text$) AS WORD | Returns the height, in pixels, of Text$ string | 1 | W |
TextWidth | FUNCTION (Text$) AS WORD | Returns the width, in pixels, of Text$ string | 1 | W |
TextRect | SUB (Rect AS QRECT, x%, y%, S$, fc%, bc%) | Write text, and clip within region Rect | 6 | W |
TextOut | SUB (x%, y%, S$, fc%, bc%) | Writes text to image | 5 | W |
Event | Type | Occurs when... | Params | Support |
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OnChange | VOID | User selects a different item | 0 | WXG |
OnDrawItem | SUB (Index%, State%, R AS QRect) | Items are redrawn for ownerdraw comboboxes | 3 | W |
OnMeasureItem | SUB (Index%, Height%) | Calculate Height for ownerdraw variable comboboxes | 3 | W |
DIM Form AS QForm DIM ComboBox AS QComboBox SUB ItemChanged PRINT ComboBox.Item(ItemIndex) END SUB ComboBox.Parent = Form ComboBox.OnChange = ItemChanged ComboBox.AddItems "1. Apples", "2. Oranges", "3. Bananas" Form.ShowModal