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Sets the library return value to a null-terminated string.
void _RetChar(char FAR *string) char FAR *string; /* String. */ |
Remarks
If you need to return a string that might contain embedded null characters, use the _RetVal(В ) function.
For more information on how to create an API library and integrate it with Visual FoxPro, see Accessing the Visual FoxPro API.
Example
The following example makes two calls to _RetChar(В ), demonstrating that control returns to the API routine from _RetChar(В ) and that the last _RetChar(В ) determines the value returned to Visual FoxPro.
Visual FoxPro Code
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SET LIBRARY TO RETCHAR | |
C Code
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#include <pro_ext.h>
void FAR chars(ParamBlk FAR *parm)
{
char message[] = "Hello, world";
_RetChar(message);
}
FoxInfo myFoxInfo[] = {
{"CHARS", (FPFI) chars, 0, ""}
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
}; | |