The following table lists the default Size Policies for the different dialog item types. If the Size Policy needs to be changed for a dialog item, use the EXTINTATTR_HORIZONTAL_SIZEPOLICY or EXTINTATTR_VERTICAL_SIZEPOLICY extended attributes, or the "sizePolicy=" auxInfo override, which are all described Dialog Resource Integration. Consider using a Stretch Factor or Stretch Item before overriding the default Size Policy of an item.
| Dialog Item Type | Default Horizontal Size Policy | Default Vertical Size Policy |
|---|---|---|
| ButtonGroup | Fixed | Fixed |
| Container | Preferred | Preferred |
| ContainerPanel | Preferred | Preferred |
| ColorChooser | Fixed | Fixed |
| ColorPicker | Minimum | Fixed |
| ComboBox | Minimum | Fixed |
| CompactSlider | Fixed | Fixed |
| FlowDocumentScrollViewer | Preferred | Preferred |
| Generic | Fixed | Fixed |
| GroupBox | Preferred | Preferred |
| IconCmd | Fixed | Fixed |
| IconPopup | Minimum | Fixed |
| Label | MinimumExpanding | Fixed |
| Label (with LABEL_WORDWRAP) | Preferred | Preferred |
| LevelList | Preferred | Preferred |
| ListBox | Preferred | Preferred |
| MenuBar | Preferred | Fixed |
| MultilineText | MinimumExpanding | MinimumExpanding |
| OptionButton | Minimum | Fixed |
| PushButton | Minimum | Fixed |
| RadioButton | Minimum | Fixed |
| Sash (vertical) | Fixed | Expanding |
| Sash (horizontal) | Expanding | Fixed |
| Scale (vertical) | Fixed | Expanding |
| Scale (horizontal) | Expanding | Fixed |
| ScrollBar (vertical) | Fixed | Expanding |
| ScrollBar (horizontal) | Expanding | Fixed |
| Separator (vertical) | Fixed | Expanding |
| Separator (horizontal) | Expanding | Fixed |
| SpinBox | Minimum | Fixed |
| TabPageList | Minimum | Minimum |
| Text | Minimum | Fixed |
| ToolBox | Fixed | Fixed |
| Tree | Preferred | Preferred |
| UpDownButtons | Fixed | Fixed |
| WinFormsControl | Fixed | Fixed |