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Hi guys I am relatively new to PyQt. I am trying create a custom plugin for Qgis which enables the user to select some features by drawing polygon on the canvas using mouse clicks and then performs intersection of the selected features with another layer.
How to distinguish left click from right click in Python?
The pygame.event.Event () object has two attributes that provide information about the mouse event. Each mouse button is associated a value. For instance the value of the attributes is 1, 2, 3, 4, 5 for the left mouse button, middle mouse button, right mouse button, mouse wheel up respectively mouse wheel down.
How to distinguish left click, right click mouse clicks?
The state of a button is True as long as a button is held down. When multiple buttons are pressed, multiple items in the list are True. The 1st, 2nd and 3rd elements in the list represent the left, middle and right mouse buttons. If a specific button is pressed, this can be evaluated by subscription:
When does the mousebuttondown event occur in Pygame?
The MOUSEBUTTONDOWN event occurs once when you click the mouse button and the MOUSEBUTTONUP event occurs once when the mouse button is released. The pygame.event.Event () object has two attributes that provide information about the mouse event. Each mouse button is associated a value.
When does the qgisinterface signal get emitted?
Emitted whenever current (selected) layer changes. Signal emitted when the current theme is changed so plugins can change their tool button icons. This signal is emitted after a layout designer window is closed. This signal is emitted when a new layout designer has been opened.
Which is the best documentation for pyqgis samples?
PyQGIS samples Purpose Work progression Want to contribute? Licence Acknowledgements Contact When you start to use the QGIS Python API ( (also known as “PyQGIS”), your most complete documentation is the C++ QGIS API documentation.
Which is the best way to use the QGIS API?
Then, you will rely on the the PyQGIS cookbook, the examples available online and the code from the existing plugins (if you are already good at programming). Numerous users are struggling to use the C++ QGIS API documentation and apply it to Python, to go further. This repository is an attempt to start to cover all the Python QGIS API.