How to Use the FXALERT() Function in FOXTOOLS.MLB

• Microsoft Visual FoxPro for Macintosh, version 3.0b
• Microsoft FoxPro for Macintosh, version 2.6a

SUMMARY

The FXALERT() function in FOXTOOLS.MLB (FOXTOOLS.CFM or FOXTOOLS.SLM in Visual FoxPro for Macintosh), displays an alert and waits for a user response. One of three icons can be displayed in the alert dialog box based on the type of alert chosen <expN1>. FXALERT returns a value representing the user exit action. Because of the presence of the function, the user can take advantage of the Macintosh system interface and pause the execution of an application without requiring an additional READ level.

MORE INFORMATION

Sample Code - Example Syntax for FXALERT Function

The following code is an example of the syntax required to use the FXALERT function.

*** Begin Code ***

 * ***************************************************************
   * The sample program named MY_ALERT.PRG uses the FOXTOOLS     *
   * Library function FXALERT. The program prompts the user to   *
   * enter a message or stop to quit the program. If the user    *
   * enters a message other than "stop," the program requests an *
   * icon value of 0=Caution, 1=Stop, or 2=Note. After the user  *
   * chooses an icon, the program displays the selected icon and *
   * entered message in an alert dialog box. Once the FXALERT    *
   * function is activated, the user is allowed to choose either *
   * Yes or No. After the user selects the push button prompt in *
   * the dialog, the screen is cleared and a message is          *
   * displayed as a wait window displaying the choice made. The  *
   * cycle continues until stop is entered in the message area.  *
   * NOTE: No READ CYCLE was required for the push button prompts*
   * or the FXALERT dialog interface.                            *
   * *************************************************************

   SET LIBRARY TO SYS(2004)+"FOXTOOLS.MLB" ADDITIVE
   * Use the following line with FoxPro for Macintosh
   * SET LIBRARY TO SYS(2004)+"FOXTOOLS.CFM" ADDITIVE
   ACTIVATE WINDOW SCREEN  && refresh main FoxPro window
   flag = .t.                   && Set Flag for DO WHILE
   DO WHILE flag
      CLEAR
      ACCEPT "Please Enter a Message or Stop -->" TO msg
      If UPPER(msg) = "STOP"
         EXIT
      ELSE
        INPUT " 0 = Caution, 1 = Stop, 2 = Note -->" TO fx_icon
        reply = FXALERT((fx_icon),259,-1,-1,(msg))
        If reply = 1                       && Determine button pressed
            WAIT WINDOW "(Yes) was Pressed" TIMEOUT 3
        Else
           WAIT WINDOW "(No) was Pressed" TIMEOUT 3
        ENDIF
      ENDIF
   ENDDO
   SET LIBRARY TO          && Close FOXTOOLS.MLB Library.
   CLEAR                   && Clear Screen

The following information describes the syntax and parameters for the FXALERT function. It is an excerpt from the FoxTools ReadMe file.

FXALERT() Syntax

Syntax: FXALERT(<expN1>, <expN2>, <expN3>, <expN4>[, <expC1>] [, <expC2>][, <expC3>][, <expC4>])

NOTE: If the FOXTOOLS.MLB is not referenced the following Program Error is generated "File <Name> Does Not Exist."

<expN1>

   Specifies a number that indicates the icon to be displayed on the
   alert. 0=CAUTION; 1=STOP; 2=NOTE.

   Specifies the resource number. FOXTOOLS contains the same twelve
   alerts provided in the FOXUSER file of FoxBASE+ for Macintosh. In
   FOXTOOLS, the resource numbers are 257 through 268 instead of 1
   through 12 as in FoxBASE+ for Macintosh. An alert contains different
   possible push button combinations which you can choose. For example,
   resource number 259 contains the push buttons "Yes" and "No" with the
   focus initially on the "Yes" push button.

   Specify the coordinates, measured in pixels from the top left of
   the screen, at which the alert will be placed. Use a value of -1 for
   <expN3> and/or <expN4> to accept the default position. The default
   position is centered.

[, <expC1>][, <expC2>][, <expC3>][, <expC4>]

    Specify text that will appear on the alert.

Res#   Button 1     Button 2    Button 3   Note

259    (Yes)         No
260     Yes         (No)
261    (Yes)         No         Cancel
262     Yes         (No)        Cancel
263    (Continue)                          Bigger alert than 257
264    (OK)                                Bigger alert than 258
265    (Yes)         No                    Bigger alert than 259
266     Yes         (No)                   Bigger alert than 260
267    (Yes)         No         Cancel     Bigger alert than 261
268     Yes         (No)        Cancel     Bigger alert than 262

REFERENCES

FoxTools Readme file in FoxPro:Goodies:Misc folder for FoxPro for Macintosh versions 2.x.

FoxTools Help file in the Visual FoxPro:Goodies folder for Visual FoxPro for Macintosh version 3.0.