事件

在「事件」选项卡页面中,允许您为表格中发生的某些事件指定宏。

要访问此命令...

打开选中表单元素的右键菜单 - 选择「表单 - 事件」选项卡。

打开「表单控件」工具栏或「表单设计」工具栏,点击「表单」图标 - 事件选项卡。


要使事件与宏链接,需要先编写宏,将所有要在事件发生时执行的命令都包括在宏中。然后点击事件旁的「...」按钮,以指定相应的宏。将打开「指定宏」对话框,可以在其中选择宏。

以下这些操作可以让用户自由配置,即您可以用自己的对话框显示操作:

  1. 显示错误报告,

  2. 确认 (数据记录的) 删除操作,

  3. 查询参数,

  4. 保存数据记录时检查输入。

例如,在删除记录时,可以发出「确定删除」请求,例如「确定要删除客户 xyz 吗?」。

批注图标

无法直接对「事件」对话框中显示的事件进行编辑。您可以按 Delete 键从列表中删除事件。


下面列出并介绍了表格中可以与宏链接的所有事件:

加载时

The When loading event occurs directly after the form has been loaded.

发生一个错误

The Error occurred event is activated if an error occurs when accessing the data source. This applies to forms, list boxes and combo boxes.

在卸载之前

The Before unloading event occurs before the form is unloaded; that is, separated from its data source.

在卸载时

The When unloading event occurs directly after the form has been unloaded; that is, separated from its data source.

在重新加载时

The When reloading event occurs directly after the form has been reloaded. The data content has already been refreshed.

填入参数

The Fill parameters event occurs when the form to be loaded has parameters that must be filled out. For example, the data source of the form can be the following SQL command:

SELECT * FROM address WHERE name=:name

这里: name 是一个在加载必须填写的参数。在可能的情况下,参数被自动从上一级表格中选出并填写。如果参数无法被填入,则调出这一事件,同时链接的宏可以填入参数。

提交之前

The Before submitting event occurs before the form data is sent.

更新之前

The Before update event occurs before the control content changed by the user is written into the data source. The linked macro can, for example, prevent this action by returning "FALSE".

更新之后

The After update event occurs after the control content changed by the user has been written into the data source.

重置之前

The Prior to reset event occurs before a form is reset. The linked macro can, for example, prevent this action by returning "FALSE".

如果出现下列条件之一,表格会被重置:

  1. 用户确认一个被定义为复位按钮的 (HTML) 按钮。

  2. 在链接到数据源的表格中创建新的空白记录。例如,在最后的记录中按下「下一个记录」按钮。

重置之后

The After resetting event occurs after a form has been reset.

确认删除

The Confirm deletion event occurs as soon as data has been deleted from the form. For example, the linked macro can request confirmation in a dialog.

记录操作之后

The After record action event occurs directly after the current record has been changed.

记录操作前

The Before record action event occurs before the current record is changed. For example, the linked macro can request confirmation in a dialog.

记录更改前

The Before record change event occurs before the current record pointer is changed. For example, the linked macro can prevent this action by returning "FALSE".

记录更改后

The After record change event occurs directly after the current record pointer has been changed.

重新加载之前

The Before reloading event occurs before the form is reloaded. The data content has not yet been refreshed.

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