Motorola T720 Developer's Manual page 53

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Coding Example

Step 1: Change a button's offset scheme

Locate the code for the fifth button, b5, in the ButtonScreen's constructor. Uncomment the

statement:

// b5.setLeftEdge(Component.PREVIOUS_COMPONENT_RIGHT, 0);

What this statement does is offsets b5's left edge to the right edge of the previous

component, which is the round button b4.

Step 2: Build and start the program under debugger control

Issue the Debug command (Project | Debug) to have CodeWarrior's IDE make the

program and start the debugger.

Step 3: Observe the effect of the new offset scheme

Issue a Run command (Project | Run) to have the MIDlet execute in the debugger. Note

that the location of the second round button, b5, has changed

Use the navigation button to move the focus ownership so that the second round button

has focus (Figure 22).

Figure 22.

The second round button appears relative to the first round button's right edge. However,

the vertical offset scheme is still in effect: this button's top edge is located relative to the

first round button's bottom edge.

Use the Exit soft key to terminate the MIDlet and end the debugger session.

Step 4: Change another offset scheme for this button

Use the editor to uncomment the statement:

The second round button, using an offset where the button's left edge is

relative to the first round button's right edge.

b5.setTopEdge(Component.PREVIOUS_COMPONENT_TOP, 0);

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