Function DllInfo() Foundation
Retrieves runtime information about loaded DLLs.
DllInfo( [<cDllName>|<nDllHandle>], <nDllInfo> ) --> xValue
The return value of DllInfo() depends on the second parameter and yields various information about a DLL. The following #define constants can be used for <nDllInfo>:
|DLL_INFO_CLASSFUNCLIST||One dimensional array holding the symbols of exported class functions as character strings|
|DLL_INFO_FUNCLIST||One dimensional array holding the symbols of exported functions as character strings|
|DLL_INFO_HANDLE||Numeric handle of a DLL|
|DLL_INFO_IMPORTS||One dimensional array holding the handles of DLLs which are imported (linked statically) by the DLL as numerics|
|DLL_INFO_LIST||One dimensional array holding the numeric handles of loaded DLLs created with Xbase++|
|DLL_INFO_LOADED||.T. (true) if DLL is loaded, otherwise .F. (false)|
|DLL_INFO_NAME||Character string containing the DLL file name without path information|
|DLL_INFO_PATHNAME||Character string containing the full qualified file name of DLL|
|DLL_INFO_PREFIX||Function prefix of dynamically loaded DLL (see DllLoad(), second parameter)|
|DLL_INFO_TYPE||Numeric corresponding to DLL_TYPE_* constants:|
|- DLL_TYPE_UNKNOWN = unknown type|
|- DLL_TYPE_GENERAL = DLL not created with Xbase++|
|- DLL_TYPE_XPP_STATIC = statically linked DLL|
|- DLL_TYPE_XPP_DYNAMIC = DLL loaded with DllLoad()|
|- DLL_TYPE_XPP_DYNAMIC_NOUNLOAD = DLL loaded by DllLoad() but cannot be unloaded|
|DLL_INFO_UNLOADABLE||.T. (true) if no function implemented in the DLL is currently being executed, otherwise .F. (false)|
|DLL_INFO_USAGELIST||One dimensional array holding the symbols of currently executed functions as character strings|
The function is used to obtain various information about one or more DLL(s) created with Xbase++. This is especially useful when a program loads and unloads DLLs dynamically at runtime. The function can determine whether or not a DLL is loaded, the directory where the DLL is located or a list of exported functions contained in a DLL.
To obtain the handles of all loaded DLLs, the function is called without the first parameter and with DLL_INFO_LIST as the second parameter. The returned array contains the numeric handles of the DLLs currently being loaded. If a DLL handle is passed as first parameter along with DLL_INFO_LIST as the second parameter, DllInfo() includes into the array only the handles of this DLL and the DLLs loaded afterwards.
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