fdocs: wiki snapshot 2021.06.29

- fixed naming mistake with KeyPgThiscall
- remove old examples

Author: jayrm

doc/manual/cache/KeyPgThicsall.wakka renamed to doc/manual/cache/KeyPgThiscall.wakka

@@ -8,14 +8,14 @@ Specifies the //Thiscall// calling convention in a member procedure declaration
 	End Type
 ##
 {{fbdoc item="desc"}}
-	In member procedure declarations, ##**""__Thiscall""**## specifies that a procedure will use the ##**Thiscall**## calling convention. In the //Thiscall// calling convention, the implicit and hidden [[KeyThis|This]] parameter is passed in the ##ECX## register.
+	In member procedure declarations, ##**""__Thiscall""**## specifies that a procedure will use the ##**Thiscall**## calling convention. In the //Thiscall// calling convention, the implicit and hidden [[KeyPgThis|This]] parameter is passed in the ##ECX## register.
 
 	The ##//Thiscall//## calling convention is for 32-bit x86 targets only and is only partially implemented.  It should work when using //-gen gcc// backend, but as of fbc-1.08.0, it is not implemented for the //-gen gas// backed.
 
 	It is not needed for normal fbc usage, and would typically only be needed for linking to and using ""g++/c++"" libraries.
 
 {{fbdoc item="ex"}}
-{{fbdoc item="filename" value="examples/manual/procs/thicall.bas"}}%%(freebasic)
+{{fbdoc item="filename" value="examples/manual/procs/thiscall.bas"}}%%(freebasic)
 '' __thiscall only makes sense on windows 32-bit
 #if defined(__FB_WIN32__) and not defined(__FB_64BIT__)
 	#define thiscall __thiscall

examples/manual/control/return.bas

@@ -0,0 +1,26 @@
+'' examples/manual/procs/thiscall.bas
+''
+'' NOTICE: This file is part of the FreeBASIC Compiler package and can't
+''         be included in other distributions without authorization.
+''
+'' See Also: https://www.freebasic.net/wiki/wikka.php?wakka=KeyPgThiscall
+'' --------
+
+'' __thiscall only makes sense on windows 32-bit
+#if defined(__FB_WIN32__) And Not defined(__FB_64BIT__)
+	#define thiscall __Thiscall
+#else
+	#define thiscall
+#endif
+
+Extern "c++"
+Type UDT
+	value As Long
+	'' fbc doesn't automatically add the __thiscall calling convention
+	'' therefore, currently needs to be explicitly given where needed
+	Declare Constructor thiscall ()
+	Declare Destructor thiscall ()
+	Declare Sub someproc thiscall ()
+	'' etc
+End Type
+End Extern