pygame does not receive scroll event after re-init - pygame

Question

I'm making a game for school project, and there's scrolling stuffs in my game. I need to reinit pygame to make sure every is reset. But somehow, scrolling stops working after reinit pygame.
I made a simple script to test if that really was the case, and it was.
import pygame
def main():
while True:
pygame.init()
screen = pygame.display.set_mode([1280, 720])
pygame.display.set_caption("PYGAME DOES NOT RECEIVE SCROLL EVENT AFTER RE-INIT?")
frame = pygame.time.Clock()
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 1:
print("left click")
elif event.button == 4:
print("scroll up")
elif event.button == 5:
print("scroll down")
if event.type == pygame.QUIT:
running = False
frame.tick(30)
pygame.quit()
if __name__ == "__main__":
main()
It gets left click event but not the scrolling ones.
Is there any way to fix this?

Answer 1

don't use pygame.MOUSEBUTTONDOWN for scroll.
I have found another way for you to map scrollling using pygame.MOUSEWHEEL.
Here is the revised code:
import pygame
def main():
while True:
pygame.init()
screen = pygame.display.set_mode([1280, 720])
pygame.display.set_caption("PYGAME DOES NOT RECEIVE SCROLL EVENT AFTER RE-INIT?")
frame = pygame.time.Clock()
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 1:
print("left click")
if event.button == 3:
print("right click")
if event.type == pygame.MOUSEWHEEL:
if event.y == 1:
print("scroll up")
if event.y == -1:
print("scroll down")
if event.type == pygame.QUIT:
running = False
frame.tick(60)
pygame.quit()
if __name__ == "__main__":
main()
btw, happy new year and good luck mate~