1. Chapter 1: An Introduction to Visual Basic 2015

2. Lesson C Objectives After studying Lesson C, you should be able to:
Set the properties of a timer control
Delete a control from the form
Delete code from the Code Editor window
Code a timer control’s Tick event procedure
Prevent the user from sizing a form
Remove and/or disable a form’s Minimize, Maximize, and Close buttons
Print an application’s code and interface
Programming with Microsoft Visual Basic 2015

3. Using the Timer Tool Splash screens typically close automatically
They do not usually contain an Exit button
The timer control removes the splash screen
Timer tool
Used to create a timer control
Timer control
Processes code at regular time intervals
Does not appear on the user interface at run time
Interval property
Specified in milliseconds
Enabled property
Allows the timer to run if set to True
Programming with Microsoft Visual Basic 2015

4. Using the Timer Tool (cont.)
Tick event
Occurs each time an interval has elapsed
Condition: The timer must be running (enabled)
Add code to the Tick event procedure
Code will be run when the Tick event occurs
Component tray
A special area below the form design area in the IDE
Stores controls not visible in the user interface at run time
Programming with Microsoft Visual Basic 2015

5. Using the Timer Tool (cont.)
Figure 1-31 Timer control placed in the component tray
Programming with Microsoft Visual Basic 2015

6. Setting the FormBorderStyle Property
Determines the border style of a form
Example settings:
Sizable: Allows the user to change a form’s size by dragging its borders at run time
FixedSingle: A fixed, thin border line
None: No border
Programming with Microsoft Visual Basic 2015

7. The MinimizeBox, MaximizeBox, and ControlBox Properties
MinimizeBox property
Determines whether the Minimize button appears on the form’s title bar
MaximizeBox property
Determines whether the Maximize button appears on the form’s title bar
ControlBox property
Determines whether the title bar appears on the form
Splash screens typically do not contain a title bar
To remove a title bar, delete the contents of the form’s Text property
Programming with Microsoft Visual Basic 2015

8. The MinimizeBox, MaximizeBox, and ControlBox Properties (cont.)
Figure 1-33 Completed splash screen
Programming with Microsoft Visual Basic 2015

9. Printing the Application’s Code and Interface
Printing the application’s code and user interface helps you understand and maintain the application
To print the code:
Click the Splash Form.vb tab to make the Code Editor window the active window
Click FILE on the menu bar, and then click Print to open the Print dialog box
Programming with Microsoft Visual Basic 2015

10. Printing the Application’s Code and Interface (cont.)
To print the interface:
Make the Designer window the active window
Press the Window’s logo screen to switch to tile mode
Type snipping tool, when you see Snipping Tool in the list of applications, click Snipping Tool
Click the New button. Drag the cursor around the form and then release the mouse button.
Click File and then click Save As. Save file as file type Portable Network Graphic file (PNG)
Right-click saved PNG file and then click Print on the context menu.
Programming with Microsoft Visual Basic 2015

11. Printing the Application’s Code and Interface (cont.)
Figure 1-34 Print dialog box
Programming with Microsoft Visual Basic 2015

12. Lesson C Summary
The timer control processes code at specified intervals
A form’s MinimizeBox and MaximizeBox properties enable or disable the Minimize and Maximize buttons on the form
A form’s ControlBox property determines whether the icon and control buttons appear in the title bar
A form’s FormBorderStyle property controls the appearance of the form’s border
Print Visual Basic code from the Code Editor window
Print the user interface from the designer window
Programming with Microsoft Visual Basic 2015