findpanel的相关代码_scxgridfindpanelclearbuttoncaption-优快云博客

本文链接：https://blog.youkuaiyun.com/delphigbg/article/details/125368221

本文介绍了如何使用TcxGridFindPanel进行高级搜索操作，包括清空搜索内容、创建自定义编辑框、切换面板可见性、焦点判断、禁用历史记录和启用扩展语法。通过实例代码演示了如何灵活定制FindPanel，以适应不同场景需求。

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findpanel基本方法

In addition to this method, you can use the following controller methods to switch the visibility of the Find Panel and customize its search string: ClearFindFilterText, GetFindFilterText, ShowFindPanel, HideFindPanel, and IsFindPanelVisible.

清空搜索内容

cxGridDBTV.DataController.ClearFindFilterText;

用代码执行findpanle的功能（默认的findpanle太占地方了，可以自己新建一个edit1，放到cxgrid的水平滚动条，可以启用数据导航功能，默认有属性设置间距的）

var
AFindPanel: TcxGridFindPanel;
begin
AFindPanel := TcxGridFindPanel.Create(<AcxGridDBTableView>.Controller);
<AcxGridDBTableView>.Controller.ApplyFindFilterText(<your text>);
end;

判断是否聚焦

type
TcxGridTableControllerAccess = class(TcxGridTableController);
procedure TForm1.Timer1Timer(Sender: TObject);
var
AEdit: TcxGridFindPanelMRUEdit;
begin
AEdit := TcxGridTableControllerAccess(cxGrid1DBTableView1.Controller).FindPanel.Edit;
if (AEdit <> nil) and AEdit.Focused then
Caption := '+'
else
Caption := '-';
end;

禁用最近访问历史记录

type
TcxGridTableControllerAccess = class(TcxGridTableController);
procedure TForm1.FormCreate(Sender: TObject);
begin
TcxGridTableControllerAccess(cxGrid1DBTableView1.Controller).FindPanel.Edit.Properties.ImmediateDropDownWhenKeyPressed := False;
TcxGridTableControllerAccess(cxGrid1DBTableView1.Controller).FindPanel.Edit.Properties.Buttons[0].Visible := False;
end;

启用扩展语法

<AcxGridDBTableView>.FindPanel.UseExtendedSyntax := True; //enable this option

扩展语法的使用规则

Additional information:
Use the new Options.UseExtendedSyntax property to enable the extended syntax for Find Panel search strings, allowing end-users to apply multiple conditions. According to the extended syntax, words separated by the space character are treated as individual conditions combined by the OR logical operator. The grid shows records that match at least one of these conditions. The extended syntax includes support for the following specifiers and wildcards:
- The "+" specifier. Preceding a condition with this specifier causes the grid to display only records that match this condition. The "+" specifier implements the logical AND operator. There should be no space character between the "+" sign and the condition.
- The "–" specifier. Preceding a condition with "–" excludes records that match this condition from search results. There should be no space between the "–" sign and the condition.
- The percent ("%") wildcard. This wildcard substitutes any number of characters in a condition.
- The underscore ("_") wildcard. This wildcard represents any single character in a condition.
For more information about the extended syntax, refer to the corresponding section in the "Find Panel" help topic.

翻译按钮中文

dxCore, cxGridStrs;
initialization
cxSetResourceString(@scxGridFindPanelClearButtonCaption, '清空');
cxSetResourceString(@scxGridFindPanelFindButtonCaption , '搜索');

type TcxGridTableControllerAccess = class (TcxGridTableController); TcxGridFindPanelAccess = class(TcxGridFindPanel); //............. TcxGridFindPanelAccess(TcxGridTableControllerAccess(cxGrid1DBTableView1.Controller).FindPanel).Edit.SetFocus;