小编Qui*_*int的帖子

是否可以通过更改变量来触发事件？例如。

这将触发事件

Dim t As Integer
Dim Fire As Boolean

Private Sub Test
t = 0
Fire = True
IIf Fire, t=1, t=2
End sub

在事件处理程序中

Select Case t
    Case 0
       'Do something
    Case 1
       'Do something            
    Case 2
       'Do something
    Case 3
       'Do something
    ...   

Google调出了事件处理程序，并使用了类模块，但是我无法解决这个问题。

我通过 pip3 安装 mairadb 时收到错误。下面是命令和错误。

sudo pip3 install mariadb
------------------------------------------------------------------
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting mariadb
  Using cached mariadb-1.0.0.tar.gz (78 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/local/bin/python3.8 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-z5vslgxx/mariadb/setup.py'"'"'; __file__='"'"'/tmp/pip-install-z5vslgxx/mariadb/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-hfv4vge6
         cwd: /tmp/pip-install-z5vslgxx/mariadb/
    Complete output (12 lines):
    /bin/sh: 1: mariadb_config: not found
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-z5vslgxx/mariadb/setup.py", line 26, in <module>
        cfg = get_config(options) …