應用程式回撥

最後更新： 2026年9月11日

你可以在特定事件發生時，向應用程式物件註冊 Python 回調 。

使用者介面物件，如選單和按鈕，可使用 Qt for Python 函式庫觸發回調。欲了解更多資訊，請參閱建立使用者介面元素。

import sd



## Our callbacks.

def onBeforeFileLoadedCallback(filePath):

    print("Before file loaded, file: %s" % filePath)



def onAfterFileLoadedCallback(filePath, succeed, updated):

    print("After file loaded, file: %s, succeed: %s, updated: %s" % (filePath, succeed, updated))



def onBeforeFileSavedCallback(filePath, parentPackagePath):

    print("Before file saved, file: %s, parentPackage: %s" % (filePath, parentPackagePath))



def onAfterFileSavedCallback(filePath, succeed):

    print("After file saved, file: %s, succeed: %s" % (filePath, succeed))



## Get the application.

app = sd.getContext().getSDApplication()



## Register our callbacks.

beforeFileLoadedCallbackID = app.registerBeforeFileLoadedCallback(onBeforeFileLoadedCallback)

afterFileLoadedCallbackID = app.registerAfterFileLoadedCallback(onAfterFileLoadedCallback)

beforeFileSavedCallbackID = app.registerBeforeFileSavedCallback(onBeforeFileSavedCallback)

afterFileSavedCallbackID = app.registerAfterFileSavedCallback(onAfterFileSavedCallback)



## Unregister callbacks when no longer needed.

app.unregisterCallback(beforeFileLoadedCallbackID)

app.unregisterCallback(afterFileLoadedCallbackID)

app.unregisterCallback(beforeFileSavedCallbackID)

app.unregisterCallback(afterFileSavedCallbackID)

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