L scripting language invoke operating system API

The scripting language supports direct invocation of the C-language API functions provided by the operating system to ensure greater flexibility

Currently, only C-language functions with function calling conventions of __stdcall are supported

The C language variable and the L scripting language object is not a one by one corresponding relationship, so when you call a C function, you cannot directly pass the L script language object as a parameter, but you can make the appropriate conversion

The following is a call to Windows system Kernel32.dll in the OUTPUTDEBUGSTRINGW function and

An example of calling the MessageBoxW function in User32.dll

and encapsulates it as a global function of the L scripting language

#scplib
Definition: String, Kernel32,c:\windows\system32\kernel32.dll
Definition: C function, Myoutputdebugstringw,kernel32,outputdebugstringw, none, c wide character pointer

Definitions: Functions, output debugging information, debug messages
Start: function, output debugging information

definition: C wide character pointer, parameter 1, debug message

Call: C function, Myoutputdebugstringw, none, Parameter 1

End: function, output debug information

Register: function, output debug information

#scplib

Definition: String, User32,c:\windows\system32\user32.dll

Definition: c function, Mymessageboxw,user32,messageboxw,c Integer, handle, C wide character pointer, c wide character pointer, c unsigned integer
Definitions: Functions, pop-up windows, titles, content
Start: Functions, pop-up windows

Definition: Handle, parameter 1,0

Definition: C wide character pointer, parameter 2, content

Definition: C wide character pointer, parameter 3, caption

Definition: c unsigned integer, parameter 4,0

Definition: C integer, return value, 0

Call: C function, Mymessageboxw, return value, Parameter 1, parameter 2, parameter 3, parameter 4

End: function, pop-up window

Registration: Functions, pop-up windows

#scp
Import: library, H:\SCRIPTENGINE\SCRIPTS\KERNEL32LIB.SCP
Import: library, H:\SCRIPTENGINE\SCRIPTS\USER32LIB.SCP

Definition: String, debug information, "Hellodebugmessage"
Definition: String, dbgstring, "ABCD"

Output Debug Information: Debug information
Output Debug Information: dbgstring

Definition: string, string1, hello Programmer
Definition: String, string2, title

Pop-up window: string2,string1

L scripting language invoke operating system API