PyGTK Tutorial
PyGTK Useful Resources
Selected Reading
- PyGTK - Drag and Drop
- PyGTK - Timeout
- PyGTK - Ruler Class
- PyGTK - Clipboard Class
- PyGTK - Calendar Class
- PyGTK - SpinButton Class
- PyGTK - DrawingArea Class
- PyGTK - Image Class
- PyGTK - Arrow Class
- PyGTK - Scrolledwindow Class
- PyGTK - Viewport Class
- PyGTK - ProgressBar Class
- PyGTK - Statusbar Class
- PyGTK - Paned Class
- PyGTK - TreeView Class
- PyGTK - AspectFrame Class
- PyGTK - Frame Class
- PyGTK - Notebook Class
- PyGTK - File Chooser Dialog
- PyGTK - Color Selection Dialog
- PyGTK - Font Selection Dialog
- PyGTK - AboutDialog Class
- PyGTK - MessageDialog Class
- PyGTK - Dialog Class
- PyGTK - Scrollbar Class
- PyGTK - Scale Class
- PyGTK - Range Class
- PyGTK - Adjustment Class
- PyGTK - Toolbar Class
- PyGTK - MenuBar, Menu & MenuItem
- PyGTK - RadioButton Class
- PyGTK - CheckButton Class
- PyGTK - ToggleButton Class
- PyGTK - ComboBox Class
- PyGTK - Layout Class
- PyGTK - EventBox Class
- PyGTK - Alignment Class
- PyGTK - ButtonBox Class
- PyGTK - Box Class
- PyGTK - Containers
- PyGTK - Event Handling
- PyGTK - Signal Handling
- PyGTK - Entry Class
- PyGTK - Label CLass
- PyGTK - Button Class
- PyGTK - Window Class
- PyGTK - Important Classes
- PyGTK - Hello World
- PyGTK - Environment
- PyGTK - Introduction
- PyGTK - Home
PyGTK Useful Resources
Selected Reading
- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
PyGTK - Adjustment Class
PyGTK - Adjustment Class
Some widgets in PyGTK toolkit are such that their properties can be adjusted over a specified range by the user by using a mouse or a keyboard. A widget pke Viewport is used to display some adjustable portion of a large data, for example, a multipne text in TextView control.
PyGTK uses gtk.Adjustment object to be used in association with such widgets so that user adjustments are passed to some callback function for processing. An Adjustment object contains lower and upper bounds of an adjustable value and its increment step paramaters. When parameters of adjustment object changes, it emits changed or value_changed signals.
The following is the constructor of the gtk.Adjustment class −
gtk.Adjustment(value = 0, lower = 0, upper = 0, step_incr = 0, page_incr = 0, page_size = 0)
The meaning of each of the attributes in the constructor is as follows −
| value | The initial value |
| lower | The minimum value |
| upper | The maximum value |
| step_incr | The step increment |
| page_incr | The page increment |
| page_size | The page sizes |
The following signals are emitted by the Adjustment object −
| Changed | This is emitted when one (or more) of the adjustment attributes (except the value attribute) has changed. |
| Value-changed | This is emitted when the adjustment value attribute has changed. |
As mentioned above, the Adjustment object is not a physical widget. Rather, it is used in association with the other widgets using which its attributes get changed. Range widgets are used along with the Adjustment object.
Advertisements