When you are building an application (.APP) from a project that makes
reference to a function or procedure that is contained within another
application, FoxPro is unable to resolve the external reference. The
Build function will display the following error message:
Unable to Find Proc./Func. <name>
At the bottom of the file, create a procedure stub that references the
Additional ways to resolve this problem and their advantages and
disadvantages are explained at the end of the "More Information"
NOTE: Using the EXTERNAL PROCEDURE <name> compiler directive does not
resolve the problem.
The code example below demonstrates this error. Because the main .APP
file makes reference to a procedure stored in another .APP file, the
Build function is unable to resolve the reference.
- Open a new program file. Name it SUBAPP.PRG and include the
WAIT WINDOW 'Myfunc called.'
- Save the program, and include it in a new project named SUBAPP.PJX.
Save the project, and build an application named SUBAPP.APP.
- Create a file named MAINAPP.PRG. Include the following code:
EXTERN PROCEDURE MyFunc
DO MyFunc IN SubApp.app
- Save the program and add it to a new project named MAINAPP.PJX.
Save the project and build an application named MAINAPP.APP.
During the build, as FoxPro is attempting to resolve external
references, an alert will appear with the following text:
Unable to Find Proc./Func. MYFUNC
Locate, Ignore, Ignore All, Cancel
- In the alert box, choose Locate and choose SUBAPP.APP, which
contains the procedure MyFunc. FoxPro will add the application as
an excluded application to the project MainApp and complete the
build. Run MAINAPP.APP, and the wait window will appear with the
text "MyFunc called."
- Rebuild MAINAPP.PJX. Note that once again the "Unable to Find
Proc./Func." alert appears. Attempting to locate SUBAPP.APP again
will add yet another copy of the application as an excluded
application to the project. You can choose Ignore instead, and
FoxPro will rebuild MAINAPP.APP without error.
You can resolve this problem in one of three ways:
- Choose Ignore when the Locate alert appears every time you rebuild
- Remove the reference to SUBAPP.APP from the MAINAPP project, pack
the project, and add a reference to the source program, in this
case SUBAPP.PRG, which contains the source code for the procedure
- Add the following code to the end of MAINAPP.PRG:
This is a procedure stub that helps FoxPro resolve the external
reference. Since the line of code that actually calls the procedure
explicitly specifies the file in which the procedure actually
resides, it is that procedure (in this case, the procedure in
SUBAPP.APP) which will be called.
Both the second and the third options will eliminate the problem.
However, while the second option requires the source code to be
available and that it be built into the application, increasing its
size, the third option requires that the entire called application
that includes the single function be sent along with the calling
application. If the source code to the function is not available, and
you would like to avoid the alert box, use the third method.
Article ID: 102586 - Last Review: February 28, 2014 - Revision: 2.1
- Microsoft Visual FoxPro 3.0 Standard Edition
- Microsoft FoxPro 2.5b
- Microsoft FoxPro 2.5a
- Microsoft FoxPro 2.0
- Microsoft FoxPro 2.5b for MS-DOS
- Microsoft FoxPro 2.5a
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