DEFPUSHBUTTON Statement

Summary: Syntax

DEFPUSHBUTTON text, id, x, y, width, height[[,style]]

This statement defines a default push-button control that belongs to the BUTTON class. It creates a small rectangle with a bold outline that represents the default response for the user. The given text is displayed inside the button. The control highlights the button in the usual way when the user clicks the mouse in it and sends a message to its parent window.

The text field takes an ASCII string that specifies the text to be displayed. The string must be enclosed in double quotation marks. To add a mnemonic to the text string, place an ampersand (&) ahead of the letter that will be the mnemonic. To use an ampersand as a character in a string, insert two ampersands (&&).

The id field takes a unique integer value that identifies the control.

The x and y fields take integer values that specify the x and y coordinates of the upper-left corner of the control. The horizontal units are 1/4 of the dialog base width unit; the vertical units are 1/8 of the dialog base height unit. The current dialog base units are computed from the height and width of the current system font. The GetDialogBaseUnits function returns the dialog base units in pixels. The coordinates are relative to the origin of the dialog box.

The width and height fields take integer values that specify the width and height of the control. The width units are 1/4 of the dialog base width unit; the height units are 1/8 of the dialog base height unit.

The optional style field can contain any combination (or none) of the following styles:

WS_TABSTOP

WS_GROUP

WS_DISABLED

These styles are described in the list of window styles following the description of the STYLE statement on page 171.

In addition to these styles, the style field may contain any combination (or none) of the BUTTON-class styles described in the list of control styles on page 190. Styles can be combined using the bitwise inclusive OR operator.

Summary: Comments

The x, y, width, and height fields can use the addition operator (+) for relative positioning. For example, 15 + 6 can be used for the x field.

The default style for DEFPUSHBUTTON is BS_DEFPUSHBUTTON and WS_TABSTOP.

The following example demonstrates the correct usage of the DEFPUSHBUTTON statement:

DEFPUSHBUTTON “ON”, 7, 10, 10, 20, 10