Computer Programming Concepts and Visual Basic David I. Schneider

FIGURE 10-9 A Picture Created with Paint and Reduced Several Times
COMMENTS
1. When placing Line and Shape controls on a form, greater precision can be
achieved by first turning off the “Align Controls to Grid” option in the General
tab of the Options submenu of the Tools menu.
2. Although frames cannot receive the focus, they can have an access key that
sends the focus to the first control inside the frame that can receive the focus.
3. You can paste a picture into an image control by copying it from your paint program
and pressing Crl+V with the image control selected.
10.3 FIVE ADDITIONAL OBJECTS
In this section we discuss three controls and two objects that are not controls. The three controls
are the Microsoft FlexGrid control (a custom control), the menu control (not accessed
through the toolbox), and the common dialog box control (a custom control). The two objects
are the clipboard and the form. The discussion of the form deals with the use of multiple
forms.
THE MICROSOFT FLEXGRID CONTROL
Five Additional Objects 303
The FlexGrid control does not initially appear in your Toolbox. To add the control, click on
Components in the Project menu, click the Controls tab, and click on the check box to the left
of “Microsoft FlexGrid Control 6.0.” Then press the OK button. By convention, names of
Microsoft FlexGrids have the prefix msg.
A grid is a rectangular array used to display tables or to create spreadsheet-like applications.
The grid in Figure 10-10 has 6 rows and 7 columns. The number of rows and columns
can be specified at design time with the Rows and Cols properties or at run time with statements
such as msgFlex.Rows = 6 and msgFlex.Cols = 7. Rows and columns are numbered
beginning with 0. For instance, the rows in Figure 10-10 are numbered (from top to bottom)
as 0, 1, 2, 3, 4, and 5.