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Why is a Drag and Drop event on Pygame not allowed?

I have a simple Pygame display:
pygame.init()
screen = pygame.display.set_mode((1024, 576))
clock = pygame.time.Clock()
while True:
for event in pygame.event.get(): # to handle clicks on the screen (prevent crash)
if event.type == pygame.QUIT:
pygame.display.quit()
if event.type == pygame.DROPFILE:
path = event.file
print(path)
pygame.display.update()
I'm currently testing the "drop file" event to use it in a project I'm working on. Unfortunately, when I drag a file onto the screen, the cursor turns into a "not allowed" sign and nothing happens when I drop the file. Why does it happen?

Without changing your code much (adding 'import pygame'), it doesn't work for me either. I droped a file and then the same happend for me what happend for you. Thats what I thought.
I first tried Python 3.8.6 with Pygame 1.9.6. Then I remembered, that I have an other installation of Python with 3.9.1 and Pygame version 2.0.0.
This second combination worked for me. I don't know which part made the difference in the end, but I think they did much work for pygame 2.0.0, so give it a try.
This works for me on Windows 10.

Pygame Display Position While Running

I am making a pygame project, and have an issue where the window sets itself in the corner of the screen when I back out of full screen mode. Normally, this wouldn't be an issue but it hides the toolbar off screen, making it impossible to drag the screen around or resize it. I have found pygame.display.toggle_fullscreen() to be far to unreliable and breaks whenever I use it, so I made my own method of toggling fullscreen:
import pygame, tkinter
fullscr = False
scrw, srch = tkinter.Tk().winfo_screenwidth(), tkinter.Tk().winfo_screenheight()
while True:
for event in pygame.event.get():
if event.type == pygame.KEYUP:
if event.key == pygame.K_F11:
if fullscr:
screen = pygame.display.set_mode((scrw, scrh), pygame.RESIZABLE)
screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
else:
screen = pygame.display.set_mode((980, 720), pygame.RESIZABLE)
fullscr = not fullscr
For those curious, I set the window to fill the screen before setting it to fullscreen because the window will maintain its aspect ratio, breaking my game and causing weird glitches. I am already aware of os.environ['SDL_VIDEO_CENTERED'] = '1' as a way to center the screen, but this does not work after running pygame.init(). Are there any other ways I can change the windows position, or at least prevent it from hiding the toolbar off screen when toggling out of fullscreen?

This is a pygame 2 bug.
It's reported on github here: https://github.com/pygame/pygame/issues/2360,
and the author there realized that you can get around this for now by calling pygame.quit() and then reinitializing to have the SDL_VIDEO_CENTERED work.
Hopefully this will be fixed in pygame 2.0.2. I've written a patch for it at https://github.com/pygame/pygame/pull/2460

Pycharm - pygame shows only black screen

Here is the code
import pygame
pygame.init()
screen_width = 480
screen_height = 640
screen = pygame.display.set_mode((screen_width, screen_height))
background = pygame.image.load("D:/Python/Pygame_200830/Background.png")
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
#screen.fill((0, 0, 255))
screen.blit(background, (0, 0))
pygame.display.update()
pygame.quit()
if I open this with VS code, it works well but, when I do this with Pycham. I can't see "backgound.png"
it's just only black display... and the only difference is IDE program.
I already added external function or something... only that backgound is the problem.
Could you let me know what is the reason...?

It is likely that the root cause of your problem is from Pycharm configurations or venv. see if you can open the python console. If you're new to pycharm, you can find the 'python console' option at the bottom of the screen.
Also here's a link that might help you. try some of the solutions there:
https://www.reddit.com/r/learnpython/comments/au6lvd/pycharm_code_works_but_doesnt_display_output/

pygame - Fullscreen game graphics shift when re-entering the game window [duplicate]

im currently trying to have a setting to switch from windowed mode and fullscreen. But after getting into fullscreen and trying to go back, the game bugs really weird and sticks to the topleft corner
Btw:
display_width = 1280
display_height = 720
elif (Settings_Menu == True):
screen.fill((0,0,0))
screen.blit(settingsscreen, (0,0))
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 1:
if checkbox1.collidepoint(event.pos):
if(Fullscreen == False):
Fullscreen = True
screen = pygame.display.set_mode((display_width, display_height), pygame.FULLSCREEN)
else:
Fullscreen = False
screen = pygame.display.set_mode((display_width, display_height), pygame.RESIZABLE)

This is a known bug in pygame 2.0 and 2.0.1. Reported on github here
The author there also found a workaround where you quit pygame between switching fullscreen.
Unfortunately, the toggle_fullscreen documentation is wrong. It does not work on windows. Reported on github
Now you might think- pygame has way too many problems with fullscreen, which is reasonable. But they are being fixed. I submitted a patch for your issue which was merged a week ago and will be included in pygame 2.0.2.

Use pygame.display.toggle_fullscreen() to switch between fullscreen and windowed displays.
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 1:
if checkbox1.collidepoint(event.pos):
pygame.display.toggle_fullscreen()
The documentation documentation mentions that display driver support "is not great" when using Pygame 1, but it should work for the following display drivers in Pygame 2:
windows (Windows)
x11 (Linux/Unix)
wayland (Linux/Unix)
cocoa (OSX/Mac)
However, at the time of writing this answer, there is a bug in toggle_fullscreen for Windows:
display.toggle_fullscreen does not work when toggling a maximized window to fullscreen #2380

i had this problem and fixed it with:
pygame.display.set_mode(size,pygame.SCALED)
and then i wrote pygame.display.toggle_fullscreen() and worked.

Window resize example from Pygame wiki not working

I took this tutorial from pygame.org which should show how to resize the window properly (image has to be supplied to it, you can use for instance my gravatar). The image should resize to the window, but this doesn't happen with me. Only one VideoResize event is created as soon as I resize the window even so slightly:
<Event(16-VideoResize {'h': 500, 'w': 501, 'size': (501, 500)})>
No other VideoResize events are created (other things like mouse movement or keypresses work). So is the tutorial wrong? Is my computer wrong? What is the proper way of doing it?
I'm running: Python 2.7.5, Pygame 1.9.1, Fedora 20, MATE 1.8.1, Toshiba Satellite.
Here's the code (slightly modified to print the event, but neither the original nor this one work):
import pygame
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((500,500), RESIZABLE)
pic = pygame.image.load("example.png")
screen.blit(pygame.transform.scale(pic, (500,500)), (0,0))
pygame.display.flip()
done = False
while not done:
pygame.event.pump()
for event in pygame.event.get():
if event.type == QUIT:
done = True
elif event.type == VIDEORESIZE:
print event # show all VIDEORESIZE events
screen = pygame.display.set_mode(event.dict['size'], RESIZABLE) # A
screen.blit(pygame.transform.scale(pic, event.dict['size']), (0,0))
pygame.display.flip()
pygame.display.quit()
If I comment the line # A, then I get plenty of events, but this is the line which resizes the window.

Well I ran the tutorial example with only one change which is I used a pic of a cat called cat.png and it worked fine. The resize is working you just grab a corner and it allows me to adjust it freely with dragging. The picture fills the window whatever size I make it. Have you done other scripts with pygame successfully?