This is in response to Giovanni's post titled "a button with an image in it in a Treeview".

In Part 1, I've showed a solution using GtkListStore.

In Part 2, we used a tree store instead of list store.

In this Part 3, we add a realtime total time elapsed to the project (which is the total sum of time elapsed for each individual activity) as shown below.

We also add the following enhancements:

• There was a lag of 1 second after you click the start button. This has been fixed.
• Fixed the bug in which the timers starts when you click on the button_blank32.gif that goes with a project.
• Wrote a format_time() function so that it can now displays time greater than 24 hrs

This is in response to Giovanni's post titled "a button with an image in it in a Treeview".

In Part 1, I've showed a solution using GtkListStore.

In this Part 2, I present the same solution, but using GtkTreeStore instead of GtkListStore so that the projects and activities can be shown in a treeview manner as shown below.

Note that I've also changed the millisecond timer to a seconds timer because it seems that having more than 6 concurrent millisecond timer running in a treeview seems to be a bit too taxing for the treeview. You can try it for yourself. The timer doesn't get updated often enough, even though we set the timeout at 1ms interval.

This is in response to Giovanni's post titled "a button with an image in it in a Treeview".

He would like to have a button (with an image in it) in a GtkTreeView as shown below.

When the user clicks on the start button of an activity, the start button will change to a stop button, and the corresponding timer of the activity will start running.

When the user clicks on the stop button, the timer will stop, and the button will change back to "Start". The user may click the Start button again to continue the timer.

You would like to grab a screenshot of your application and save it in a .png file as shown below:

Suppose you have two monitors.

You would like your PHP-GTK application to always open on the second monitor as shown below:

You have set up a GtkNotebook with multiple tabs.

Suppose you would like to allow the users to hide and unhide tabs as shown below:

You have set up two GtkNotebooks.

This example shows you how you can move a tab (together with its contents) from one notebook to another using drag and drop as shown below:

Before:

After:

This is in response to Paul's post titled "Access Treeview cell renderers".

He would like to highlight some rows and cells based on some conditions.

In this example, if there is some error, the respective rows will be highlighted in red. The filename of the respective row will also be bold as shown below. This example also illustrates one commonly used technique: the serial number appearing on the left-most column will always stay in running sequence - even when the user deleted some rows.

The new GtkTooltip is so flexible that you can even display a GtkTable in a tooltip as shown below:

Key method used: GtkTooltip::set_custom().

In Part 4, I've showed you how to display an image as well as a markup text in a tooltip.

However, instead of display the label to the right of the image, you would like the image to be displayed below the image as shown below:

Key method used: GtkTooltip::set_custom().