getLibFn

Syntax

int getLibFn(void *dllHandle, char *functionName)

Arguments

dllHandle
A handle (obtained with loadLib) to the DLL the function is in.
functionName
The name of the function to get a pointer to.

Return

Returns a pointer to the DLL function.

Description

Locates a specific function in a DLL, allowing you to call the function from within FilterMeister by using callLib.

Example

// This code loads the user32.dll DLL included with Windows and
// uses it to display a YES/NO Message Box.

int lib_user32, functionPointer, returnval;
lib_user32 = loadLib("user32");
if (!lib_user32) msgBox(MB_OK, "Error", "DLL was not loaded");
functionPointer = getLibFn(lib_user32, "MessageBoxA");
if (!functionPointer) msgBox(MB_OK, "Error", "Function wasn't loaded");
strcpy(str0, "The window text is here");
strcpy(str1, "Caption Text");
returnval = callLib(functionPointer, NULL, str0, str1, MB_YESNO);
if (returnval == IDYES) msgBox(MB_OK, "Yes!", "Yes was clicked");
if (returnval == IDNO) msgBox(MB_OK, "No :(", "No was clicked");
freeLib(lib_user32);

Also see

loadLib, callLib, freeLib

Comments

Everyone can add their comments about their experiences with this function here. Tips for using it are welcome, too.