topic Method, parameters and attributes in Application Development and Automation Discussions

Method, parameters and attributes

Former Member — Fri, 17 Aug 2007 12:56:36 GMT

Dear SAP friends!

Could anybody explain me how to find possible values of a parameter?

Here is an example:

CALL METHOD o_picture->set_display_mode

EXPORTING

display_mode = cl_gui_picture=>display_fit_center.

Parameter "display_mode" has 4 possible values. The parameter values could be found in Attributes Tab.

But how I can identify that these 4 values are related to "display_mode" parameter?

Let's say I want to use method "set_display_mode" of class "cl_gui_picture".

I go to SE84 and display the class. Then I find the method I want to use and click "parameters". Then I see the parameter "display_mode".

I know that possible values of the parameter could be found in Attributes Tab. But there so many of them...

How do I know which is which? Clicking on "display_mode" doesn't give any information and there is no documentation available in English...

Thanks,

Tatyana

Re: Method, parameters and attributes

uwe_schieferstein — Fri, 17 Aug 2007 13:43:41 GMT

Hello Tatyana

In many cases you will find the appropriate values defined as constant attribute of the class or its superclass. Class CL_GUI_PICTURE has the following constant attributes:


DISPLAY_MODE_NORMAL	Constant	Public
DISPLAY_MODE_STRETCH	Constant	Public
DISPLAY_MODE_FIT	Constant	Public
DISPLAY_MODE_NORMAL_CENTER	Constant	Public
DISPLAY_MODE_FIT_CENTER	Constant	Public

Regards

Uwe

Re: Method, parameters and attributes

RichHeilman — Fri, 17 Aug 2007 13:59:07 GMT

Yes, this is a little bit tricky at times. But the class, method, attributes are designed to be intuitive, meaning that the wording of the methods and and attributes are described in such a way that it is easy to recoginize what contansts can be used to pass to method calls. Lets take the class CL_GUI_DOCKING_CONTAINER for example. Lets look at the CONSTRUCTOR method and its parameter SIDE. You will see that this parameter is of TYPE I and that it is actually using on of the constants as its default, DOCK_AT_LEFT. So if you go to the attributes tab and look for DOCK_AT_LEFT, you will find other contants that are available to pass to this parameter.

If you are looking for a hard list of values(or constants in attributes tabs) which can be passed to any given parameter of any given method, I do not believe that this functionality exists.

REgards,

Rich Heilman

Regards,

Rich Heilman

Re: Method, parameters and attributes

Former Member — Fri, 17 Aug 2007 14:01:27 GMT

Got you.

1. Go SE84. Find class "cl_gui_picture". Click Method "set_alignment". Click Parameters. There is parameter "alignment". Go "Attributes" and search for alignment constants: Align_at_bottom, align_at_left, align_at_right, align_at_top

2. Go SE84. Find class "cl_gui_picture". Click Method "set_metric". Click Parameters. There is parameter "metric". Go "Attributes" and search for metric constants: metric_mm and metric_pixel

Thank you Uwe.

Tatyana.