Delphi inquire about DevExpress controls 10-28 I now wrapped DevExpress control development system, which USES TcxCheckComboBox controls, it is a multiple-choice combobox control checkbox, but encounter a problem, generating cxCheckComboBox data inside, either through a database, or manually add data, can only check the former 63 data, after the 63th data without any reaction when click the check box, still can't find the reason (for example my cxCheckComboBox there are 100 data, but only the first 63) can be checked, please everybody to help, because very urgent very urgent, high marks for help!!!

CodePudding user response:

DEV version?
Maybe you can use the high version,
Or look at the field length is set in the database,
However, this amount of the Check, return true not played,

CodePudding user response:

More than 64, your EditValueFormat cannot be cvfInteger,
Below is the class of a paragraph:
Note: You always use the cvfInteger edit the value if the editor contains more than 64 items. In this instance, an exception is raised at the design and runtime.

CodePudding user response:

. As long as setting the Properties of the edit box EditValueFormat has a value of any value other than cvfInteger, the latter (cfvInteger) makes the edit box to its control value is expressed as checked by binary combination of the project, each option represents a 2 N integer value, namely options related integer value is 1,2,4,8,16 or other, the control value is the integer value of the sum of the options, so, at this time can be checked the maximum number of not more than 64 (64),