Left
Design-time horizontal position within the owning TabControl.
Range: -100000 to 100000.
Own the controls on one page of a TabControl.
A TabPage is a child of TabControl, and the controls on a page belong to that page. Overlapping controls on the Form itself do not become tab content. Keep the selected page and any Next/Back commands synchronized.
Add TabPage to its intended parent and name it tabPageGeneral for this example:
| Property | Example value |
|---|---|
Visible | True |
Enabled | True |
Caption | "General" |
Use the full lesson for the owner’s initialization code and its complete layout.
Contract defaults are shown below. Where a new control has a different Designer starting value, that value is listed separately.
LeftDesign-time horizontal position within the owning TabControl.
Range: -100000 to 100000.
TopDesign-time vertical position below the TabControl page headers.
Range: -100000 to 100000.
WidthDesign-time page width.
Range: 0 to 100000.
HeightDesign-time page height.
Range: 0 to 100000.
MinWidthMinimum control width in device-independent points; 0 lets the parent layout choose.
Range: 0 to 100000.
MinHeightMinimum control height in device-independent points; 0 lets the parent layout choose.
Range: 0 to 100000.
MaxWidthMaximum control width in device-independent points.
Range: 0 to 100000.
MaxHeightMaximum control height in device-independent points.
Range: 0 to 100000.
TabIndexStable page order within the owning TabControl.
Range: 0 to 100000.
ZIndexStacking order among sibling controls; larger values appear in front. Equal values preserve document order.
Range: -100000 to 100000.
AnchorEdges kept at their authored distance when the parent resizes. Use a comma-separated combination of Left, Top, Right and Bottom; Dock overrides the effective anchor without deleting it.
VisibleWhether the page is available in the running application.
EnabledWhether the page can be selected in the running application.
HitTestVisibleWhether the running control participates in pointer hit testing. The control remains selectable in the Designer.
AllowDropWhether this running control accepts application drag-and-drop operations; Designer movement is separate.
DragModeVB control drag: 0 Manual (code starts a drag with the Drag method) or 1 Automatic (a left-button press starts a drag, and the control raises no Click, MouseDown or MouseUp for that press).
Range: 0 to 1.
DragIconCase-insensitive name of a declared project image resource shown under the pointer while this control is dragged; empty shows a grey outline of the control.
FontContainer caption font as Family|Size or Family|Size|Regular/Bold|Normal/Italic, size 6–96 DIP. Empty uses the default caption font.
ForeColorContainer caption text color as #RRGGBB. Empty uses the current theme color.
BackColorContainer background color as #RRGGBB. Empty uses the current theme background.
PaddingInner spacing as one non-negative DIP value or Left,Top,Right,Bottom; child coordinates remain relative to the padded content area.
AccessibleNameName announced by assistive technology. Empty uses the stable control Name.
CursorPointer shown over the control: Default, Arrow, Hand, IBeam, Cross, Wait, Help, SizeAll, SizeNS, SizeWE, SizeNWSE, SizeNESW or NotAllowed.
OpacityVisual opacity from 0 (transparent) to 1 (opaque).
Range: 0 to 1.
DesignLockedPrevents movement and resizing in the Designer without changing runtime interaction.
AccessibleDescriptionAdditional help text announced by assistive technology.
AccessibleRoleAccessibility role override. Auto preserves the native semantic role; explicit values use the corresponding platform automation role.
AutomationIdStable automation identifier; empty uses the component Name.
ToolTipTextHelp text shown when the pointer rests over the running control; empty disables the tooltip.
TagApplication-defined text associated with this control; McBasic™ does not interpret it.
CaptionCaption displayed in the TabControl header.
IndexPosition of this control in its control array, 0 to 32767. Several controls share one name only when every one of them has an Index. Absent from the layout, and -1 in code, when the control is not in an array.
Designer values: 0 to 32767. Clear the dedicated Index row for a non-array control; BASIC then reads -1.
Replace control with the object’s Name when creating a handler. ByRef arguments may be changed by your handler; ByVal arguments report an input value.
Occurs when this page becomes the selected page of its TabControl.
Private Sub control_Activated()No parameters.
Occurs when this page stops being the selected page of its TabControl.
Private Sub control_Deactivated()No parameters.
Occurs after the effective control size changes.
Private Sub control_Resize()No parameters.
Occurs when runtime drag data enters this control; set Effect to Copy, Move, Link or None.
Private Sub control_DragEnter(ByVal Data As DragData, ByRef Effect As DragEffect, ByVal X As Double, ByVal Y As Double)| Parameter | Type | Direction |
|---|---|---|
Data | DragData | ByVal |
Effect | DragEffect | ByRef |
X | Double | ByVal |
Y | Double | ByVal |
Occurs while runtime drag data moves over this control; Effect may be updated for the current position.
Private Sub control_DragOver(ByVal Data As DragData, ByRef Effect As DragEffect, ByVal X As Double, ByVal Y As Double)| Parameter | Type | Direction |
|---|---|---|
Data | DragData | ByVal |
Effect | DragEffect | ByRef |
X | Double | ByVal |
Y | Double | ByVal |
Occurs while a control dragged inside the app (DragMode or the Drag method) moves over this control: State is 0 when it enters, 2 while it moves over and 1 when it leaves; Source is the dragged control and X, Y are local DIP coordinates.
Private Sub control_DragOver(ByVal Source As Control, ByVal X As Single, ByVal Y As Single, ByVal State As Integer)| Parameter | Type | Direction |
|---|---|---|
Source | Control | ByVal |
X | Single | ByVal |
Y | Single | ByVal |
State | Integer | ByVal |
Occurs when runtime drag data leaves this control without a drop.
Private Sub control_DragLeave()No parameters.
Occurs when runtime drag data is dropped on this control with a stable McBasic™ effect and local DIP coordinates.
Private Sub control_Drop(ByVal Data As DragData, ByVal Effect As DragEffect, ByVal X As Double, ByVal Y As Double)| Parameter | Type | Direction |
|---|---|---|
Data | DragData | ByVal |
Effect | DragEffect | ByVal |
X | Double | ByVal |
Y | Double | ByVal |
Occurs when a control dragged inside the app (DragMode or the Drag method) is released over this control; Source is the dragged control and X, Y are local DIP coordinates.
Private Sub control_DragDrop(ByVal Source As Control, ByVal X As Single, ByVal Y As Single)| Parameter | Type | Direction |
|---|---|---|
Source | Control | ByVal |
X | Single | ByVal |
Y | Single | ByVal |
Occurs when a pointing-device button is pressed over this control; Button is stable McBasic™ identity and X/Y are control-local DIP coordinates.
Private Sub control_MouseDown(ByVal Button As MouseButton, ByVal Shift As KeyModifiers, ByVal X As Double, ByVal Y As Double)| Parameter | Type | Direction |
|---|---|---|
Button | MouseButton | ByVal |
Shift | KeyModifiers | ByVal |
X | Double | ByVal |
Y | Double | ByVal |
Occurs when a pointing-device button is released for this control; Button is stable McBasic™ identity and X/Y are control-local DIP coordinates.
Private Sub control_MouseUp(ByVal Button As MouseButton, ByVal Shift As KeyModifiers, ByVal X As Double, ByVal Y As Double)| Parameter | Type | Direction |
|---|---|---|
Button | MouseButton | ByVal |
Shift | KeyModifiers | ByVal |
X | Double | ByVal |
Y | Double | ByVal |
Occurs when the pointer moves over the logical McBasic™ control; Button contains the currently held buttons and X/Y are local DIP coordinates.
Private Sub control_MouseMove(ByVal Button As MouseButtons, ByVal Shift As KeyModifiers, ByVal X As Double, ByVal Y As Double)| Parameter | Type | Direction |
|---|---|---|
Button | MouseButtons | ByVal |
Shift | KeyModifiers | ByVal |
X | Double | ByVal |
Y | Double | ByVal |
Occurs once when the pointer enters the effective bounds of the logical McBasic™ control.
Private Sub control_MouseEnter()No parameters.
Occurs once when the pointer leaves the effective bounds of the logical McBasic™ control.
Private Sub control_MouseLeave()No parameters.
Occurs when native system timing recognizes a primary-button double activation on the same logical McBasic™ control.
Private Sub control_DoubleClick()No parameters.
No methods are declared in this component’s built-in metadata. Use its documented properties and events; do not infer APIs from a similarly named control in another framework.
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