In the process of software development, I have experienced some problems with the getchild function. I want to have it to come out and discuss it. Please tell us to quit. In DataWindow, the getChild function is mainly used to get a sub-data window of a data window, the format is as follows: Data window control name. (Column name, user-defined sub-data window variable)
Such as: a), dw_cx.getchild ("XT_CZY", DWC_CX)
b), dw_tj.getchild ("dw_1", dwc_tj)
This function can use, 1, remove the drop-down data window of the data window object; 2. Remove the sub-data window objects embedded in the composite style data window object.
It is necessary to pay attention to the second case. Be sure to use the sub-data window in the Composite style data window to use the function, if it is something else, the function returns -1, indicating that the execution failed. (I used Freedom to nest a sub-data window, then use getChild (), resulting failed.); Another note is that if it is a Composite Data window, the first parameter of the getChild () function is sub-data The name of the window (you need yourself) instead of the name of the sub-data window object. If the sub-data window is a drop-down data window, the parameter is the column name. The second parameter is the user-defined sub-data window variable. After performing getChild (), this variable is the sub-data window obtained, which can be filtered, sorted, and the like.
For example, this program takes out two sub-data windows of a Composite data window object and filters them, and sorted. / * DW_DY is a data window control that connects a Composite Data Window object. DW_1, DW_2 is Name * / of nested data windows, respectively.
String ls_filter
DataWindowChild DWC_CZRW, DWC_CZX / / Define sub-data window variable
DW_DY.SETTRANSOBJECT (SQLCA)
dw_dy.retrieve ()
DW_DY.GETCHILD ("dw_2", dwc_czrw)
DW_DY.GETCHILD ("dw_1", dwc_czx)
Ls_filter = "CZRW_BH = '" dw_3.getItemString (dw_3.getrow (), "CZRW_BH") "'" // filter condition
DWC_CZRW.SETFILTER (LS_FILTER)
DWC_CZRW.FILTER ()
Ls_filter = "CZX_RWBH = '" dw_3.getItemString (dw_3.getrow (), "CZRW_BH") "'"
DWC_CZX.SETSORT ("CZX_SX A")
DWC_CZX.SORT ()
DWC_CZX.SetFilter (ls_filter)
DWC_CZX.FILTER ()
Of course, you can also operate the data in the subtadata window by data sharing (Sharedata).
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