Flow Layout Manager (PRIM_FWLM)
Flow Layout Manager
Ancestors - Base Layout Manager (PRIM_DTVW)Object (PRIM_OBJT)
Details
The Flow Layout Manager is used to position components in a display area by dividing the items into rows or columns and then flowing the items one after the other in the appropriate row/column. The division into rows or columns is controlled by the Direction property and the number of rows/columns is controlled by the ItemsPerDivision property.
Example
Simple form using a flow layout to control the relative positions of controls.
Function Options(*DIRECT)
Begin_Com Role(*EXTENDS #PRIM_FORM) Clientwidth(454) Clientheight(140) Componentversion(2) Top(227) Left(199) Layoutmanager(#FlowLayout1)
Define_Com Class(#PRIM_FWLM) Name(#FlowLayout1) Direction(TopToBottom)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem1) Manage(#Button1) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem2) Manage(#Button2) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem3) Manage(#Button3) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem4) Manage(#Button4) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem5) Manage(#Button5) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem6) Manage(#Button6) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem7) Manage(#Button7) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem8) Manage(#Button8) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem9) Manage(#Button9) Parent(#FlowLayout1)
Define_Com Class(#PRIM_FWLI) Name(#FlowLayoutItem10) Manage(#Button10) Parent(#FlowLayout1)
Define_Com Class(#PRIM_PHBN) Name(#Button1) Caption('Button1') Displayposition(1) Left(0) Parent(#COM_OWNER) Tabposition(1) Top(0)
Define_Com Class(#PRIM_PHBN) Name(#Button2) Caption('Button2') Displayposition(2) Left(0) Parent(#COM_OWNER) Tabposition(2) Top(35)
Define_Com Class(#PRIM_PHBN) Name(#Button3) Caption('Button3') Displayposition(3) Left(0) Parent(#COM_OWNER) Tabposition(3) Top(70)
Define_Com Class(#PRIM_PHBN) Name(#Button4) Caption('Button4') Displayposition(4) Left(0) Parent(#COM_OWNER) Tabposition(4) Top(105)
Define_Com Class(#PRIM_PHBN) Name(#Button5) Caption('Button5') Displayposition(5) Left(90) Parent(#COM_OWNER) Tabposition(5) Top(0)
Define_Com Class(#PRIM_PHBN) Name(#Button6) Caption('Button6') Displayposition(6) Left(90) Parent(#COM_OWNER) Tabposition(6) Top(35)
Define_Com Class(#PRIM_PHBN) Name(#Button7) Caption('Button7') Displayposition(7) Left(90) Parent(#COM_OWNER) Tabposition(7) Top(70)
Define_Com Class(#PRIM_PHBN) Name(#Button8) Caption('Button8') Displayposition(8) Left(90) Parent(#COM_OWNER) Tabposition(8) Top(105)
Define_Com Class(#PRIM_PHBN) Name(#Button9) Caption('Button9') Displayposition(9) Left(180) Parent(#COM_OWNER) Tabposition(9) Top(0)
Define_Com Class(#PRIM_PHBN) Name(#Button10) Caption('Button10') Displayposition(10) Left(180) Parent(#COM_OWNER) Tabposition(10) Top(35)
End_Com
Properties
| Name | Description |
|---|---|
| ComponentClassName | ComponentClassName is the name of the component's class. Inherited from Object (PRIM_OBJT) |
| ComponentMembers | ComponentMembers provides access to all the member components of this component Inherited from Object (PRIM_OBJT) |
| ComponentPatternName | ComponentPatternName is used to qualify the class of the component. Inherited from Object (PRIM_OBJT) |
| ComponentTag | Generic space allowing a value to be stored for the instance Inherited from Object (PRIM_OBJT) |
| ComponentType | ComponentType gives you access to the type information about the component Inherited from Object (PRIM_OBJT) |
| ComponentTypeName | ComponentTypeName is the fully qualified name of the component's class. Inherited from Object (PRIM_OBJT) |
| Direction | Defines the direction of flow management |
| FlowOperation | Defines the flow operation used to flow the rows/columns |
| FlowOperationHor | Defines the horizontal flow operation for components in a row or column |
| FlowOperationVer | Defines the vertical flow operation for components in a row or column |
| ItemsPerDivision | Defines the number of items to position in each row/column |
| MarginBottom | Bottom margin in pixels |
| MarginLeft | Left margin in pixels |
| MarginRight | Right margin in pixels |
| MarginTop | Top margin in pixels |
| MaxColumns | Maximum number of columns allowed in the layout |
| MaxHeight | Maximum height of the control when the container is resized Inherited from Base Layout Manager (PRIM_DTVW) |
| MaxRows | Maximum number of rows allowed in the layout |
| MaxWidth | Maximum width of the control when the container is resized Inherited from Base Layout Manager (PRIM_DTVW) |
| MinColumns | Minimum number of columns allowed in the layout |
| MinHeight | Minimum height of the control when the container is resized Inherited from Base Layout Manager (PRIM_DTVW) |
| MinRows | Minimum number of columns allowed in the layout |
| MinWidth | Minimum width of the control when the container is resized Inherited from Base Layout Manager (PRIM_DTVW) |
| Name | Name identifies the component Inherited from Object (PRIM_OBJT) |
| Owner | Owner owns this component Inherited from Object (PRIM_OBJT) |
| Parent | The component instance to which this instance is attached. The visual container for a control or the collector of a set of child instances Inherited from Object (PRIM_OBJT) |
| Sizing | Determines how the layout manager will behave within the composite control it manages Inherited from Base Layout Manager (PRIM_DTVW) |
| SizingRuleHor | Defines horizontal sizing rule for a control within the cell |
| SizingRuleVer | Defines vertical sizing rule for a control within the cell |
| Spacing | Defines spacing between rows or columns |
| SpacingItems | Defines spacing between items in a row or column |
Events
| Name | Description |
|---|---|
| CreateInstance | CreateInstance is signalled when an instance of a component is created Inherited from Flow Layout Manager (PRIM_FWLM) |
| DestroyInstance | DestroyInstance is signalled when an instance of a component is about to be destroyed Inherited from Flow Layout Manager (PRIM_FWLM) |
See also
LANSA Version 15, April 2020