import tkinter as tk
window = tk.Tk()
# Set window size
winWidth = 600
winHeight = 400
# Get the screen resolution
screenWidth = window.winfo_screenwidth()
screenHeight = window.winfo_screenheight()
x = int((screenWidth - winWidth) / 2)
y = int((screenHeight - winHeight) / 2)
# Set the main window title
window.title ( "binding event parameter description")
# Set the initial position of the window centered on screen
window.geometry("%sx%s+%s+%s" % (winWidth, winHeight, x, y))
# Set the window icon
window.iconbitmap("./image/icon.ico")
# Set the window width and height fixed
window.resizable(0, 0)
def callBack(event):
print("button is click")
btn = tk.Button (window, text = "click")
btn.bind("<Button-1>", callBack)
btn.pack()
def windowBack(event):
print(event.char)
window.bind("<Key>", windowBack)
window.mainloop ()
First, the sequence of events
The sequence of events in the form of a string of representation, may represent one or more associated event.
The sequence of events described using the following syntax:
<modifier-type-detail>
-
- Event sequences are enclosed in angle brackets (<...>) in
- Content type is the most important part, which is often used to describe a common type of event, such as a mouse click or keyboard clicks (see below).
- Modifier content section is optional, it is usually used to describe the combination of keys, for example, Ctrl + c, Shift + left mouse click (see below).
- Content detail section is optional, it is often used to describe a particular key, e.g. Button-1 indicates the left mouse button.
| The sequence of events | meaning | sequence |
|---|---|---|
| <Button-1> | Users click on the left mouse button | detail |
| <KeyPress-H> | The user clicks the button H | |
| <Control-Shift-KeyPress-H> | Also clicked Ctrl + Shift + H |
Two, type
| Activate | When the state of the component from "inactive" to "active" when the triggering event |
| Button | 1. This event is triggered when the user clicks the mouse button when 2. detail section to specify exactly which buttons: <Button-1> left mouse button, <Button-2> mouse button, <Button-3> right mouse button, <Button- 4> roll on the roller (Linux), <Button-5 > lower rolling roller (Linux) |
| ButtonRelease | 1. When the user releases the mouse button to trigger the thing 2. In most cases, better than Button to use, because if not careful when user presses the mouse, the user can move the mouse out components and then release the mouse, so avoid accidentally triggered event |
| Configure | When the size of the components of change in the triggering event |
| Deactivate | When the state of the component from "active" to "inactive" when the triggering event |
| Destroy | When the component is destroyed Fires |
| Enter | 1. When the mouse pointer enters the component that triggered the event 2. Note: No, not the user presses the Enter key |
| Expose | When a part or component of the window is no longer covered by the triggering event |
| FocusIn | 1. When the component receives focus of the event is triggered 2. The user can use the Tab key to shift the focus to the assembly (the required components takefocus option is True) 3. You can also call focus_set () method so that this component has focus |
| FocusOut | When the component loses focus of the event is triggered |
| KeyPress | 1. When the user presses a key when the event is triggered 2. detail can specify a particular key, for example <KeyPress-H> represents the capital letter H is pressed when triggered when the event 3. KeyPress can be abbreviated as Key |
| KeyRelease | When the user releases a key trigger of the event |
| Leave | When the mouse pointer leaves the component that triggered the event |
| Map | 1. When the assembly of the trigger event is mapped 2. The means is a component of the time of the application, such as calling Grid () method |
| Motion | When the mouse moves over the component that triggered the whole process event |
| MouseWheel | 1. When the mouse wheel to scroll when the event is triggered 2. The event is currently only supports Windows and Mac systems, Linux systems refer to the Button |
| Unmap | 1. When the component is unmapped Fires 2 means that the application no longer being displayed when, for example calling grid_remove () method |
| Visibility | When the application is at least partly visible on the screen of the trigger event |
Three, modifier
| Alt | When pressing the Alt key |
| Any | 1 represents any type of key is pressed when 2. e.g. <Any-KeyPress> represents a trigger event when a user presses any key |
| Control | When you press the Ctrl key when |
| Double | 1. 当后续两个事件被连续触发的时候 2. 例如 <Double-Button-1> 表示当用户双击鼠标左键时触发事件 |
| Lock | 当打开大写字母锁定键（CapsLock）的时候 |
| Shift | 当按下 Shift 按键的时候 |
| Triple | 跟 Double 类似，当后续三个事件被连续触发的时候 |
四、Event 对象
| widget | 产生该事件的组件 |
| x, y | 当前的鼠标位置坐标（相对于窗口左上角，像素为单位） |
| x_root, y_root | 当前的鼠标位置坐标（相对于屏幕左上角，像素为单位） |
| keysym | 按键名，见下方 Key names（键盘事件专属） |
| keycode | 按键码，见下方 Key names（键盘事件专属） |
| num | 按钮数字（鼠标事件专属） |
| width, height | 组件的新尺寸（Configure 事件专属） |
| type | 该事件类型 |
五、Key names
| 按键名（keysym） | 按键码（keycode） | 代表的按键 |
|---|---|---|
| Alt_L | 64 | 左边的 Alt 按键 |
| Alt_R | 113 | 右边的 Alt 按键 |
| BackSpace | 22 | Backspace（退格）按键 |
| Cancel | 110 | break 按键 |
| Caps_Lock | 66 | CapsLock（大写字母锁定）按键 |
| Control_L | 37 | 左边的 Ctrl 按键 |
| Control_R | 109 | 右边的 Ctrl 按键 |
| Delete | 107 | Delete 按键 |
| Down | 104 | ↓ 按键 |
| End | 103 | End 按键 |
| Escape | 9 | Esc 按键 |
| Execute | 111 | SysReq 按键 |
| F1 | 67 | F1 按键 |
| F2 | 68 | F2 按键 |
| F3 | 69 | F3 按键 |
| F4 | 70 | F4 按键 |
| F5 | 71 | F5 按键 |
| F6 | 72 | F6 按键 |
| F7 | 73 | F7 按键 |
| F8 | 74 | F8 按键 |
| F9 | 75 | F9 按键 |
| F10 | 76 | F10 按键 |
| F11 | 77 | F11 按键 |
| F12 | 96 | F12 按键 |
| Home | 97 | Home 按键 |
| Insert | 106 | Insert 按键 |
| Left | 100 | ← 按键 |
| Linefeed | 54 | Linefeed（Ctrl + J） |
| KP_0 | 90 | 小键盘数字 0 |
| KP_1 | 87 | 小键盘数字 1 |
| KP_2 | 88 | 小键盘数字 2 |
| KP_3 | 89 | 小键盘数字 3 |
| KP_4 | 83 | 小键盘数字 4 |
| KP_5 | 84 | 小键盘数字 5 |
| KP_6 | 85 | 小键盘数字 6 |
| KP_7 | 79 | 小键盘数字 7 |
| KP_8 | 80 | 小键盘数字 8 |
| KP_9 | 81 | 小键盘数字 9 |
| KP_Add | 86 | 小键盘的 + 按键 |
| KP_Begin | 84 | 小键盘的中间按键（5） |
| KP_Decimal | 91 | 小键盘的点按键（.） |
| KP_Delete | 91 | 小键盘的删除键 |
| KP_Divide | 112 | 小键盘的 / 按键 |
| KP_Down | 88 | 小键盘的 ↓ 按键 |
| KP_End | 87 | 小键盘的 End 按键 |
| KP_Enter | 108 | 小键盘的 Enter 按键 |
| KP_Home | 79 | 小键盘的 Home 按键 |
| KP_Insert | 90 | 小键盘的 Insert 按键 |
| KP_Left | 83 | 小键盘的 ← 按键 |
| KP_Multiply | 63 | 小键盘的 * 按键 |
| KP_Next | 89 | 小键盘的 PageDown 按键 |
| KP_Prior | 81 | 小键盘的 PageUp 按键 |
| KP_Right | 85 | 小键盘的 → 按键 |
| KP_Subtract | 82 | 小键盘的 - 按键 |
| KP_Up | 80 | 小键盘的 ↑ 按键 |
| Next | 105 | PageDown 按键 |
| Num_Lock | 77 | NumLock（数字锁定）按键 |
| Pause | 110 | Pause（暂停）按键 |
| 111 | PrintScrn（打印屏幕）按键 | |
| Prior | 99 | PageUp 按键 |
| Return | 36 | Enter（回车）按键 |
| Right | 102 | → 按键 |
| Scroll_Lock | 78 | ScrollLock 按键 |
| Shift_L | 50 | 左边的 Shift 按键 |
| Shift_R | 62 | 右边的 Shift 按键 |
| Tab | 23 | Tab（制表）按键 |
| Up | 98 | ↑ 按键 |