按钮样式设计器上的事件消失

Question

我想在firemonkey中的expander上创建个性化的风格。 但是，当我想在按钮上添加事件（我用从调色板拖放的按钮替换复选框）时，当我保存时，事件消失并且不被触发。

我做错了什么？

提前致谢。

编辑：

当我从下拉菜单中创建/选择一个事件时，当我保存样式时，选定的事件会从

onclick

事件中消失，但我的代码总是被写入

编辑2：

我有一个

Expander

，我想用

Checkbox

替换默认的

Button

。

所以，我

Edit

Default Style

并将默认的

Checkbox

替换为

SpeedButton

（如上图所示）

在这个

Button

，我想在

Event

上添加一个

OnClick

。因此，我双击

OnClick

事件旁边的空白区域，并将代码写入到自动创建的此事件中。

编写完代码后，我返回

Style Designer

，看到

Event

附加到

OnClick

按钮，然后保存样式。

但是当我返回到

Style Designer

时，

Event

不再附加到

Onclick

事件，但他仍然在代码中写入/存在。

我告诉自己我保存错了，但是按钮他还在这里，所以我对我来说真的保存了。

我希望我说清楚了。

最后编辑：

    object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 480
  ClientWidth = 640
  StyleBook = StyleBook1
  FormFactor.Width = 320
  FormFactor.Height = 480
  FormFactor.Devices = [Desktop]
  DesignerMasterStyle = 0
  object Expander1: TExpander
    Align = Client
    ShowCheck = False
    Size.Width = 640.000000000000000000
    Size.Height = 480.000000000000000000
    Size.PlatformDefault = False
    StyleLookup = 'Expander1Style1'
    Text = 'Expander1'
    TabOrder = 0
    ContentSize = '455'
  end
  object StyleBook1: TStyleBook
    Styles = <
      item
      end
      item
        Platform = 'Windows 10 Desktop'
        ResourcesBin = {
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      end>
  end
end

Answer 1

您无法在样式设计器中设置事件。您应该在

FindStyleResource

事件中调用

OnApplyStyleLookup

并传递对象的

StyleName

并将其作为

TFMXObject

返回，如下所示：

procedure TForm1.Expander1ApplyStyleLookup(Sender: TObject);
var
  Control: Sender as TFmxObject;
  O: TFMXObject;
  Button: TSpeedButton;
begin
  O := Control.FindStyleResource('btnAddAction');
  if (Assigned(O) and (O is TSpeedButton)) then
    Button := O as TSpeedButton;
    if (Assigned(Button)) then
      Button.OnClick = btnAddActionClick;
end;