FlexLayout properties and attributes

This topic lists and describes the properties and attributes you can set for FlexLayout components, using the “Edit FlexLayout Attributes” dialog box.

表 1. FlexLayout properties and attributes (common)
Field/Option	Description
“Index” column	This field indicates the zero-based identification number of each region in the FlexLayout component. These index numbers are assigned automatically when the region is created.
“Length”	This field indicates the number of units, either “Flex” or “Char”, that defines the width or height of the flex region. In the list on the left, this is read-only. In the property sheet on the right, you can enter the number of units.
“Unit”	Use this field to specify the units used to calculate the “Length” of the region. This drop-down list has these options: “Char” - Indicates the number of characters that will fit in the region. This setting is fixed and not affected by the length of other regions in the component. “Flex” - Indicates the relative portion occupied by the region. The absolute length of the region varies, based on the “Length” of each Flex region, the total number of regions, and the “Minimum Length” and “Maximum Length” property specifications.
“Orientation”	This option specifies how the components in this region are to be oriented: “Fill” - When using a single component for the region, selecting this option causes the child to expand to fill the entire region. This option does not work if there is more than one component in the region. “Horizontal” - This option causes components in the region to display in a single horizontal row. “Vertical” - This option causes components in the region to display in a single stacked (vertical) column.
“Alignment”	The options available in this field depend on what option is selected for the “Orientation”. If “Orientation” is set to: “Fill”, then this option is not available. “Horizontal”, then this field offers these options: “Top” - Aligns each component in the region to the top of the region. “Middle” - Aligns each component in the vertical middle of the space. “Stretch” - Expands or contracts the component vertically to fill the available space. “Vertical”, then this field offers these options: “Left” - Aligns each component in the region to the left side of the region. “Center” - Aligns each component in the horizontal center of the space. “Stretch” - Expands or contracts the component horizontally to fill the available space.
“Pack”	The options available in this field depend on what option is selected for the “Orientation”. If “Orientation” is set to: “Fill”, then this option is not available. “Horizontal”, then this field offers these options: “Start” - Arranges the components sequentially, starting at the left edge of the region. “Center” - Arranges the components in a group at the horizontal center of the region. “End” - Arranges the components sequentially, with the last component aligned with the right side of the region. “Vertical”, then this field offers these options: “Start” - Arranges the components sequentially, starting at the top of the region. “Center” - Arranges the components in a group at the vertical center of the region. “End” - Arranges the components sequentially, with the last component aligned with the bottom of the region.
“Minimum Length”	This field specifies the minimum allowable height or width of the region. The “Orientation” option determines whether this applies to the height or the width.
“Maximum Length”	This property specifies the maximum allowable height or width of the region. The “Orientation” option determines whether this applies to the height or the width.
“Default Margin”	This option establishes a default margin for all child components in this region, calculated in WinStudio character units.
“Background Image”	This option causes an image to display in the background of this region. You can use only images that have been imported into the system.
“VisibleWhen”	This option specifies the conditions in which this region is visible. Clicking the ellipsis (“…”) button opens the Edit Condition dialog box, which you can use to set the conditions under which the region displays.
“Animation”	This option specifies an animation effect that is used to display the region when it becomes visible.
“Contained Components”	Clicking this button launches the “Edit Contained Components” dialog box, which is used to view and modify any components that are contained within this FlexLayout component. 注意：The “Edit Contained Components” dialog box displays ALL components contained within the FlexLayout component, regardless of which region contains each contained component.
Region control buttons	Use this set of buttons, located in the lower left corner of the “Edit FlexLayout Attributes” dialog box, to add, delete, and rearrange the order of the regions in the FlexLayout component.

When adding contained components (other than a FlexLayout component) to a FlexLayout component, these options can be specified:

注意：These options are available in the “Edit FlexLayout Attributes” dialog box only for non-FlexLayout contained components. To set them, click the “Edit FlexLayout” button in the upper left corner of the non-FlexLayout contained component.

Field/Option	Description
“Region Index”	Use this option to specify the index number of the region in which the child is placed. Regions are numbered in the order in which they appear in the “Edit Flex Layout Attributes” dialog box. For example, to add a child component to the second region listed, specify “2” in the “Index” column. You can also use this option to move a component from one region of the FlexLayout component to a different region.
“Margin”	To use the “Default Margin” setting, leave this field blank. To override the “Default Margin” property setting for this contained component, specify new margins, using WinStudio characters units. 注意：You can have different left, top, right, and bottom margins, by specifying four numbers separated by commas. For example, suppose you want to increase only the top margin. In this case, you would specify “0,3,0,0” in this field.

Field/Option

Description

“Region Index”

Use this option to specify the index number of the region in which the child is placed. Regions are numbered in the order in which they appear in the “Edit Flex Layout Attributes” dialog box.

For example, to add a child component to the second region listed, specify “2” in the “Index” column.

You can also use this option to move a component from one region of the FlexLayout component to a different region.

“Margin”

To use the “Default Margin” setting, leave this field blank.

To override the “Default Margin” property setting for this contained component, specify new margins, using WinStudio characters units.

注意：You can have different left, top, right, and bottom margins, by specifying four numbers separated by commas.

For example, suppose you want to increase only the top margin. In this case, you would specify “0,3,0,0” in this field.

FlexLayout properties specific to Report type forms

The properties and attributes listed and described in this section are used only for Report type forms. They are available only in the MainFlexLayout component on forms created by the “New Form Wizard”.

注意：Other than “Region Type”, these attributes are not available with all regions of the main FlexLayout component (MainFlexLayout). The additional properties and attributes available depend on what “Region Type” is selected.

You can add FlexLayout components to a Report type form after it has been created, but those FlexLayout components will not have these properties and attributes.

Field/Option	Description
“Region Type”	This field names the type of region that the FlexLayout region is being used for. Whatever you specify in this field determines what other “Report” properties are available.
“Collection”	For Detail-related regions, this field specifies what collection is the data source for the detail. Optionally, multiple regions can be specified for the same section, using VisibleWhen expressions to show/hide regions.
“Group Property”	For group-related regions, this field specifies the property being used to group the other properties.
“Repeat on New Page”	When a new page is created, this option causes the Detail Header (and Group Header, if applicable) to be shown on the new page. This option is used only for Detail Header and Group Header regions.
“Repeat on Collection Change”	When the last record for a collection has been displayed and the next record is from a different collection, this option causes the Detail Header (and Group Header, if applicable) for the new collection to display before the first record for that collection. This option is used only for Detail Header and Group Header regions.
“Insert Page Break Before”	This option causes a page break to be inserted before the region where this is set to “True”.
“Insert Page Break After”	This option causes a page break to be inserted after the region where this is set to “True”.
“Reset Page Number”	This option causes the page number (in whatever region this is set to “True”) to be reset to 1. It also starts a new count for the total pages starting with that page. For example, this can be useful on reports like invoices, where each invoice has separate page numbering.
“Can Grow”	When this option is set to “True”, all components of the region are checked to see how much space they need, based on the data of the current row. The region height is then changed to allow for enough space to contain the components. When this option is set to “True”, it forces the “Orientation” setting to “Fill” and makes it read-only.
“Sub-report Form”	If you have another Report type form that you want to use as a sub-report, select the report from the drop-down list.
“Sub-report Parameters”	Use this field to supply any parameters required by the sub-report form specified in the previous field. To specify parameters, either enter them into this field, or click the ellipsis (“…”) button and use the “Specify Form Run Options” dialog box to provide the parameters. Values from any collections that are in the current context on the parent report form can be used when calling the sub-report. This might include things like using “P(RowPointer)” when calling a sub-report for related notes.

Accessing the Edit FlexLayout Attributes dialog box

The “Edit FlexLayout Attributes” dialog box is accessed by clicking the Edit FlexLayout button in the upper left corner of a FlexLayout component or any of its contained components.