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static constexpr const char *const  | MousePressed = "MousePressed" | 
|   | The mouse went down on the widget. 
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static constexpr const char *const  | Closed = "Closed" | 
|   | The window was closed. Optional parameter: pointer to the window. 
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static constexpr const char *const  | Minimized = "Minimized" | 
|   | The window was minimized. Optional parameter: pointer to the window. 
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static constexpr const char *const  | Maximized = "Maximized" | 
|   | The window was maximized. Optional parameter: pointer to the window. 
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static constexpr const char *const  | EscapeKeyPressed = "EscapeKeyPressed" | 
|   | The escape key was pressed while the child window was focused. Optional parameter: pointer to the window. 
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static constexpr const char *const  | PositionChanged = "PositionChanged" | 
|   | The position of the widget changed. Optional parameter: new position. 
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static constexpr const char *const  | SizeChanged = "SizeChanged" | 
|   | The size of the widget changed. Optional parameter: new size. 
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static constexpr const char *const  | Focused = "Focused" | 
|   | The widget was focused. 
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static constexpr const char *const  | Unfocused = "Unfocused" | 
|   | The widget was unfocused. 
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static constexpr const char *const  | MouseEntered = "MouseEntered" | 
|   | The mouse entered the widget. 
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static constexpr const char *const  | MouseLeft = "MouseLeft" | 
|   | The mouse left the widget. 
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static constexpr const char *const  | AnimationFinished = "AnimationFinished" | 
|   | A show or hide animation finished. Optional parameters: animation type, new widget visibility or both. 
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