21 lines
922 B
Markdown
21 lines
922 B
Markdown
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**Design Pattern 2 - Persistent Windows, output updates in window**
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***This is the most common design pattern you'll find in PySimpleGUI. ***
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It's the same across all of the ports of PySimpleGUI. You'll easily be able to recognize a PySimpleGUI program by this basic structure.
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This pattern is for windows that remain open with the user interacting with them. It's a "normal" window from a user's standpoint.
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*This pattern has 4 parts:*
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1. Layout definition
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2. Window creation
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3. Event loop - read window events and inputs
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4. Window close
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Each of these parts is 1 or 2 lines of Python code when working with a basic window. The size of the event loop depends on the amount of processing you need to do when events happen in the window.
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<iframe src='https://trinket.io/embed/pygame/c0bf3a6754?start=result' width='100%' height='500' frameborder='0' marginwidth='0' marginheight='0' allowfullscreen></iframe>
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