Custom dialogs
Although the preceding dialogs should cover most of the reasons why you may wish to interrupt the user flow with a pop-up dialog, your app may have additional requirements. To support this, you can insert any content into a custom dialog so that the overall layout is consistent.
To construct a custom dialog, a new parameter and its content must be passed to the constructor function. Any Fyne widget or CanvasObject can be used in a custom dialog, which includes containers to provide more complex content. To illustrate this, we will use a TextGrid component:
content := widget.NewTextGrid()
content.SetText("Custom content")
content.SetStyleRange(0, 7, 0, 14,
widget.TextGridStyleWhitespace)
dialog.ShowCustom("Custom Dialog", "Cancel", content, win)
The preceding code will generate a custom dialog, as shown here:
Figure 5.33 – A dialog showing custom content (a TextGrid)
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