Tiny Windows API Plugin.

[DJLinux]

Download: ApiPlugin.zip

API Plugin

Param descriptors:

API_INT
API_STRING
API_ARRAY

Load a library *.dll (or *.exe) with exported function and / or methods

lib% = Import( libname$ )

Define a function or method.

function% = Define ( lib%, CDECL (TRUE / FALSE), return type, name$,  

Set params for the function or method (optional).

SetInt ( param% )
SetFloat ( param# )
SetString ( param$ )
SetArray ( params%() )

Call a function or method.

Call( function% )

Get a return value from function (optional)

Value% = GetInt()
Value# = GetFloat()
Value$ = GetString()
Values%() = GetArray(nItems%)

Helpers (advanced)

Get address (*int) of integer.

pointer% = IntPtr(var%)

Get address (*char) of string.

pointer% = StrPtr(var$)

Get string from pointer (*char).

var$ = PtrStr(pointer%)

Get integer from pointer on pointer (**int).

value% = IntPtrPtr(pointer%)

Example:

' original MessageBox declaration from "user32.dll"
' int MessageBoxA(HWND hWnd,LPCTSTR lpText,LPCTSTR lpCaption,UINT uType)

const MB_OK              =  0
const MB_ICONERROR       = 16
const MB_ICONQUESTION    = 32
const MB_ICONINFORMATION = 64

dim hUser32%     = Import("user32.dll")
dim hMessageBox% = Define(hUser32%, FALSE, API_INT, "MessageBoxA", API_INT, API_STRING, API_STRING, API_INT, 4)
                            
SetInt(0)               ' hWnd               
SetString("Text")       ' lpText    
SetString("Caption")    ' lpCaption 
SetInt(MB_ICONQUESTION) ' uType
Call(hMessageBox%)

dim Result% = GetInt()

[lal7777]

Do you think that you could add a checkbox feature?

[Wayne Rayner]

Could this be used to use a library like SDL?

[DJLinux]

Mar 16, 2012 8:58:48 GMT -5 Wayne Rayner said:

Could this be used to use a library like SDL?

NO but it's only the half of the story.

Primary you can load any dynamic lib and call every CDECL o STDCALL exported function or sub.

The problem are all the different types of arguments.

I don't see the right point for mixing Basic4GL with SDL.
If you need SDL it's recomment to write a pure SDL plugin.

This plugin is a tiny workaround to load a WINDOWS dll and call few functions.
For example hide the mouse, move the window ...

Why do you need SDL with Basic4GL ?

Joshy

[Darkjester]

This is badass.