Click Preferences->Browse Packages to enter the Packages directory, then open the User directory, check if there is a Default (Windows).sublime-mousemap file in the User directory, and create one if not. This file is used to configure the mouse operation of sublime. Enter the following in the file:
[
{
"button": "button2",
"count": 1,
"modifiers": ["ctrl"],
"command": "jump_back"
},
{
"button": "button1",
"count": 1,
"modifiers": ["ctrl"],
"press_command": "drag_select",
"command": "goto_definition"
}
]
Just click Save.
Ctrl + left mouse button jumps to the function definition;
ctrl + right mouse button to jump back.
Notice
If saving the file as Default (Windows).sublime-mousemap has no effect, try saving the file as Default.sublime-mousemap