topic Re: ALV TREE DOUBT in Application Development and Automation Discussions

topic Re: ALV TREE DOUBT in Application Development and Automation Discussions https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747537#M638798 <HTML><HEAD></HEAD><BODY><P>From SAP help:</P><P></P><P>"The compiler normally loads the description of a global class from the class library the first time you use the class in your program - in particular, when you use the class for the first time to specify the type of a reference variable. However, if the first access to a global class in a program is to its static components or in the definition of an event handler method , you must load it explicitly using the statement CLASSclass DEFINITION LOAD. This variant has no corresponding ENDCLASS statement."</P><P></P><P>in this program, events names are coming from constants of class cl_gui_column_tree (statics components) and method dispatch of class cl_gui_cfw is also a static component of global class... so you need to load them in memory before yuo can access to components</P><P></P><P></P><P>flow logic of program is mainly contained into PBO and PAI of screen 100. PBO is calling routine init_tree and PAI is just to dispatch events and leave the screen.</P></BODY></HTML> Tue, 11 Sep 2007 11:13:23 GMT franois_henrotte 2007-09-11T11:13:23Z ALV TREE DOUBT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747536#M638797 <HTML><HEAD></HEAD><BODY><P>Hi frnds,</P><P> i was going thru "BCALV_TREE_SIMPLE_DEMO", i got a doubt that</P><P> </P><P></P><P>" class cl_gui_column_tree definition load.</P><P> class cl_gui_cfw definition load."</P><P></P><P>what is the purpose of "load" and can anyone please explain me the flow of </P><P></P><P></P><P>"BCALV_TREE_SIMPLE_DEMO" program.</P><P></P><P>Thanking u all.</P><P></P><P></P><P>satya</P></BODY></HTML> Tue, 11 Sep 2007 08:18:55 GMT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747536#M638797 Former Member 2007-09-11T08:18:55Z Re: ALV TREE DOUBT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747537#M638798 <HTML><HEAD></HEAD><BODY><P>From SAP help:</P><P></P><P>"The compiler normally loads the description of a global class from the class library the first time you use the class in your program - in particular, when you use the class for the first time to specify the type of a reference variable. However, if the first access to a global class in a program is to its static components or in the definition of an event handler method , you must load it explicitly using the statement CLASSclass DEFINITION LOAD. This variant has no corresponding ENDCLASS statement."</P><P></P><P>in this program, events names are coming from constants of class cl_gui_column_tree (statics components) and method dispatch of class cl_gui_cfw is also a static component of global class... so you need to load them in memory before yuo can access to components</P><P></P><P></P><P>flow logic of program is mainly contained into PBO and PAI of screen 100. PBO is calling routine init_tree and PAI is just to dispatch events and leave the screen.</P></BODY></HTML> Tue, 11 Sep 2007 11:13:23 GMT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747537#M638798 franois_henrotte 2007-09-11T11:13:23Z Re: ALV TREE DOUBT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747538#M638799 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Below two classes are used to for stnadrad functionality for tree </P><P>First one used to control column activity for tree structure </P><P>and second one used for standard framework for tree structure.</P><P></P><P>CL_GUI_COLUMN_TREE (superclass CL_ITEM_TREE_CONTROL Column Tree Control )</P><P>CL_GUI_CFW (Control Framework Basic Class)</P><P></P><P>If you not inclide this classes then column activity for tree structure </P><P>will not work properly and standard framework for tree structure.</P><P>not get created respectively.</P><P></P><P>So it is compulsory to include these classes</P><P></P><P></P><P>you can check link for mor info.</P><P></P><P><A href="http://www.erpgenie.com/abap/controls/alvgrid.htm" target="test_blank">http://www.erpgenie.com/abap/controls/alvgrid.htm</A></P><P><A class="jive_macro jive_macro_message" href="https://community.sap.com/" __jive_macro_name="message" modifiedtitle="true" __default_attr="3826571"></A></P><P><A href="https://www.sdn.sap.com/irj/sdn/wiki?path=/pages/viewpage.action&pageid=37566" target="test_blank">https://www.sdn.sap.com/irj/sdn/wiki?path=/pages/viewpage.action&pageid=37566</A></P><P>/people/rich.heilman2/blog/2005/07/27/dynamic-internal-tables-and-structures--abap</P><P><A href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P>For understanding COntrol Frameworks in OO ABAP, check this.</P><P><A href="http://www.sapgenie.com/abap/controls/index.htm" 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href="http://www.sapgenie.com/abap/OO/" target="test_blank">http://www.sapgenie.com/abap/OO/</A></P><P><A href="http://www.sapgenie.com/abap/OO/index.htm" target="test_blank">http://www.sapgenie.com/abap/OO/index.htm</A></P><P><A href="http://www.geocities.com/victorav15/sapr3/abap_ood.html" target="test_blank">http://www.geocities.com/victorav15/sapr3/abap_ood.html</A></P><P><A href="http://www.brabandt.de/html/abap_oo.html" target="test_blank">http://www.brabandt.de/html/abap_oo.html</A></P><P></P><P><b>Reward points if useful..............</b></P><P>Regards </P><P>Minal</P></BODY></HTML> Wed, 12 Sep 2007 03:49:59 GMT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747538#M638799 Former Member 2007-09-12T03:49:59Z Re: ALV TREE DOUBT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747539#M638800 <HTML><HEAD></HEAD><BODY><P>Hi Satya,</P><P></P><P>Please checkout this previous posting</P><P></P><P><A class="jive_macro jive_macro_thread" href="https://community.sap.com/" __jive_macro_name="thread" modifiedtitle="true" __default_attr="48005"></A></P><P></P><P>+++++</P><P> <A href="http://www.sapdevelopment.co.uk/reporting/alv/alvtree.htm" target="test_blank">http://www.sapdevelopment.co.uk/reporting/alv/alvtree.htm</A> </P><P></P><P><b>ALV report using oops.</b></P><P></P><P><A href="http://www.sapgenie.com/abap/controls/alvgrid.htm" target="test_blank">http://www.sapgenie.com/abap/controls/alvgrid.htm</A></P><P><A href="http://www.sapgenie.com/abap/controls/alvgrid.htm#Refresh%20grid%20display" target="test_blank">http://www.sapgenie.com/abap/controls/alvgrid.htm#Refresh%20grid%20display</A></P><P></P><P>Regards,</P><P>Aby</P></BODY></HTML> Wed, 12 Sep 2007 09:01:38 GMT https://community.sap.com/t5/application-development-and-automation-discussions/alv-tree-doubt/m-p/2747539#M638800 Former Member 2007-09-12T09:01:38Z