Microsoft KB Archive/108668: Difference between revisions
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== RESOLUTION == | == RESOLUTION == | ||
To obtain the same results in FoxPro for Windows, add a #DEFINE preprocessor directive when you are assigning a value to the system memory variable _STARTUP. For an example, see | To obtain the same results in FoxPro for Windows, add a #DEFINE preprocessor directive when you are assigning a value to the system memory variable _STARTUP. For an example, see "Workaround" in the "More Information" section below. | ||
== MORE INFORMATION == | == MORE INFORMATION == | ||
This behavior is documented in the Help files for FoxPro for MS-DOS and FoxPro for Windows. For more information, see the | This behavior is documented in the Help files for FoxPro for MS-DOS and FoxPro for Windows. For more information, see the "#IF ... #ENDIF Preprocessor Directive" online Help topic. | ||
=== Steps to Reproduce Behavior === | === Steps to Reproduce Behavior === | ||
| Line 35: | Line 35: | ||
<pre> to save the program and close the window: | <pre> to save the program and close the window: | ||
#IF | #IF "TEST" $ _startup | ||
? | ? "TEST mode" | ||
#ELSE | #ELSE | ||
? | ? "PRODUCTION mode" | ||
#ENDIF | #ENDIF | ||
</pre> | </pre> | ||
3. In the Command window, issue the following commands: | 3. In the Command window, issue the following commands: | ||
<pre> _STARTUP = | <pre> _STARTUP = "TEST by <your name>" | ||
COMPILE test.prg | COMPILE test.prg | ||
DO test.prg | DO test.prg | ||
The #IF ... #ENDIF statements will return | The #IF ... #ENDIF statements will return "TEST mode." | ||
</pre> | </pre> | ||
4. Load FoxPro for Windows and repeat steps 1-3. The #IF ... #ENDIF | 4. Load FoxPro for Windows and repeat steps 1-3. The #IF ... #ENDIF | ||
<pre> statements will return | <pre> statements will return "PRODUCTION mode." | ||
</pre> | </pre> | ||
=== Workaround === | === Workaround === | ||
To obtain the same results ( | To obtain the same results ("TEST mode") in FoxPro for Windows, add a #DEFINE preprocessor directive when you are assigning a value to the system memory variable _STARTUP in the TEST.PRG program. For example: | ||
<pre> #DEFINE _STARTUP | <pre> #DEFINE _STARTUP "TEST by <your name>" | ||
#IF | #IF "TEST" $ _startup | ||
? | ? "TEST mode" | ||
#ELSE | #ELSE | ||
? | ? "PRODUCTION mode" | ||
#ENDIF | #ENDIF | ||
</pre> | </pre> | ||
If you recompile and run the TEST.PRG file, it should now return | If you recompile and run the TEST.PRG file, it should now return "TEST mode" in FoxPro for Windows. | ||
Additional reference words: FoxDos FoxWin 2.50 2.50a 2.50b compiler run time runtime KBCategory: kbenv kbprg KBSubcategory: FxenvMemory | Additional reference words: FoxDos FoxWin 2.50 2.50a 2.50b compiler run time runtime KBCategory: kbenv kbprg KBSubcategory: FxenvMemory | ||
|} | |} | ||
Latest revision as of 17:46, 20 July 2020
#IF ... #ENDIF Returns Different Results in FPD and FPWID: Q108668 The information in this article applies to:
SYMPTOMSIn FoxPro for MS-DOS, if a system memory variable such as _STARTUP is stored with a value prior to compilation, _STARTUP can be evaluated with the #IF ... #ENDIF statements at compile time. In FoxPro for Windows, the #IF ... #ENDIF statements will not evaluate the system memory variable _STARTUP at compile time even though the system memory variable _STARTUP contains a value prior to compilation. RESOLUTIONTo obtain the same results in FoxPro for Windows, add a #DEFINE preprocessor directive when you are assigning a value to the system memory variable _STARTUP. For an example, see "Workaround" in the "More Information" section below. MORE INFORMATIONThis behavior is documented in the Help files for FoxPro for MS-DOS and FoxPro for Windows. For more information, see the "#IF ... #ENDIF Preprocessor Directive" online Help topic. Steps to Reproduce BehaviorLoad FoxPro for MS-DOS, and then follow the steps below: 1. In the Command window, type: MODIFY COMMAND TEST 2. Type the following code into the edit window, and then press CTRL+W to save the program and close the window:
#IF "TEST" $ _startup
? "TEST mode"
#ELSE
? "PRODUCTION mode"
#ENDIF
3. In the Command window, issue the following commands: _STARTUP = "TEST by <your name>"
COMPILE test.prg
DO test.prg
The #IF ... #ENDIF statements will return "TEST mode."
4. Load FoxPro for Windows and repeat steps 1-3. The #IF ... #ENDIF statements will return "PRODUCTION mode." WorkaroundTo obtain the same results ("TEST mode") in FoxPro for Windows, add a #DEFINE preprocessor directive when you are assigning a value to the system memory variable _STARTUP in the TEST.PRG program. For example: #DEFINE _STARTUP "TEST by <your name>"
#IF "TEST" $ _startup
? "TEST mode"
#ELSE
? "PRODUCTION mode"
#ENDIF
If you recompile and run the TEST.PRG file, it should now return "TEST mode" in FoxPro for Windows. Additional reference words: FoxDos FoxWin 2.50 2.50a 2.50b compiler run time runtime KBCategory: kbenv kbprg KBSubcategory: FxenvMemory |
Last Reviewed: June 27, 1995 |
