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30 lines
1.1 KiB
Python
30 lines
1.1 KiB
Python
class CounterBtn():
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def __init__(self):
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self.cnt = 0
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#
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# Create a button with a label and react on click event.
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#
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btn = lv.btn(lv.scr_act()) # Add a button the current screen
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btn.set_pos(10, 10) # Set its position
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btn.set_size(120, 50) # Set its size
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btn.align(lv.ALIGN.CENTER,0,0)
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btn.add_event_cb(self.btn_event_cb, lv.EVENT.ALL, None) # Assign a callback to the button
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label = lv.label(btn) # Add a label to the button
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label.set_text("Button") # Set the labels text
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label.center()
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def btn_event_cb(self,evt):
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code = evt.get_code()
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btn = evt.get_target()
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if code == lv.EVENT.CLICKED:
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self.cnt += 1
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# Get the first child of the button which is the label and change its text
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label = btn.get_child(0)
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label.set_text("Button: " + str(self.cnt))
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counterBtn = CounterBtn()
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