xsharp.eu

Posted: **Mon Apr 12, 2021 4:22 am**

Hello,
I have looked at a VO application that a customer would like to migrate to X#.
This application makes massive use of the SysObject() call, in code pieces like this:

Code: Select all

cCesDir := SysObject():CesDir +Left( cTmp, 6 )
if SysObject():NoFigli( self )
	SysObject():FiltroWrite( nil,1)
	SysObject():FiltroRecMove()
	self:EndWindow()
endif

How could this call be replaced?
The X# compiler gives me the error

Code: Select all

error XS0619: 'XSharp.VO.Functions.SysObject(params XSharp.__Usual[])' is obsolete: ''SysObject()' is not supported'

Thank you very much!
Wolfgang

Posted: **Mon Apr 12, 2021 6:36 am**

Wolfgang,
I think we can add this function in the next build. It will :
- save the object in global state when you pass it an object
- return the object from global state when you call it without arguments
Nothing fancy really.
Of course this will require the /lb (allow late binding) compiler flag to compile because the return type of SysObject() will be "object".
Robert

Posted: **Mon Apr 12, 2021 6:41 am**

Hi Robert,
thank you very much!
Wolfgang

Posted: **Mon Apr 12, 2021 7:38 am**

Wolfgang,
I had a quick look at this.
SysObject in VO does 2 things:
1) It acts as a global object store
2) it registers an object that will be used by send when no object is specified but another data type.
I can implement 1) without problems.
2) is impossible in .Net because everything inherits from Object.

The example code you uploaded seems to only use feature 1).

Robert

Posted: **Mon Apr 12, 2021 7:49 am**

Hi Robert,
thank you very much!
Yes, I have looked in the application to see what use is being made, and it seems it is used only as global object store.
I have never used that myself (in VO, I store global variables in the App object, and in X# I use a special singleton class for this), and specially the second functionality seems powerful, but very risky.
Wolfgang

xsharp.eu

SysObject() and migration to X#

SysObject() and migration to X#

SysObject() and migration to X#

SysObject() and migration to X#

SysObject() and migration to X#

SysObject() and migration to X#