The PHP-GTK2 Manual compiled by the php-gtk development team has a whole lot of wealth, though sometimes the treasures are buried deep inside. Here's convenient link to some of these treasures and commonly-used items.

1. GtkStockItems - Pre-defined stock items

example: How to display a popup alert for required fields - Part 1?

2. GtkResponseType - Response ID for pre-defined dialog buttons

example: How to display a popup alert for required fields - Part 1?

3. Symbolic names for keys - for use in key-press-event
4. GdkModifierType - used to test if modifier keys such as Shift, Control, Apple and Alt is being pressed
5. GdkEventType - used to test for example which mouse button is being pressed
6. GtkJustification - sets justification of text for GtkLabel

example: How to right justify the text in GtkLabel?

7. GtkWindowPosition - sets the window position

example: How to display a popup alert for required fields - Part 1?

8. GtkButtonBoxStyle - sets the style of layout of buttons

example: How to display a popup alert for required fields - Part 2 - OK button centered?

9. GtkStateType - indicates the state of a widget - need this when setting the fg or bg color of a widget

example: How to run multiple applications in multiple windows - Part 1?

10. GtkFileChooserAction - describes whether a GtkFileChooser is being used to open existing files or to save to a new file

example: How to open a file with GtkFileChooser?

11. GtkType - used in GtkListStore and GtkTreeStore to determine the type of the column in the data table

example: How to display a 2D array in GtkTreeView - Part 1?

12. GtkTreeViewColumn type (attributes) - specify the data type of treeview column

example: How to display a 2D array in GtkTreeView - Part 1?

13. GtkSelectionMode - specify what selections users are allowed to make

example: How to copy row data from GtkTreeView using GtkClipboard - Part 2 - copy multiple rows?

Commonly used signals

One of the "confusing" areas of php-gtk2 is knowing which signals to use for what widgets, and what the arguments passed to you by php-gtk2 when the event is activated.

Here's a convenient link to the most commonly used signals, with a summary of the arguments passed to your callback functions by php-gtk2. Note that you can append as many user-defined data as you want after those sets of arguments.

1. GtkWidget::key-press-event() - callback($widget, $event)
2. GtkWidget::button-press-event() - callback($widget, $event)

example: How to put a clickable link in GtkLabel - Part 1?

3. GtkEntry::activate() - callback(GtkEntry entry)

example: How to display a popup alert for required fields - Part 1?

4. GtkButton::clicked() - callback(GtkButton button)

example: How to set a button as default action when user press Enter?

5. GtkCelllayout::set_cell_data_func() - callback(GtkCellLayout cell_layout, GtkCellRenderer cell, GtkTreeModel tree_model, GtkTreeIter iter)

example: How to display a 2D array in GtkTreeView - Part 3 - with alternate row colors?

6. GtkTreeselection::changed() - callback(GtkTreeSelection treeselection)

example: How to display a 2D array in GtkTreeView - Part 5 - get user selection?

7. GtkCellrenderertext::edited() - callback(GtkCellRendererText cellrenderertext, string path, string new_text)

example: How to use GtkCellRendererCombo - Part 2 - process combobox?