button

问题 I want to get the text from a button to compare it using an if-statement. Say I have this button: my_button = Button(self, text = 'hi') my_button.grid(row = 0, column = 0, sticky = W) And want to do something like this: my_text = my_button.text So that the following if-statement evaluates as True: if my_text == 'hi': # do something How can I do this in an easy way? 回答1: You can simply do: my_text = my_button['text'] Tkinter allows you to access any option of a widget this way ( height , width

问题 How to add button above the keyboard like this one in Stack Exchange app? And when you long press the text in UITextView How to add "Select" and "Select All"? 回答1: The first question, you can set textField 's inputAccessoryView to your custom view, this can customize the keyboard's header. The result: You can do it like below; first, you should instance the view you want to add above the keyboard. class ViewController : UIViewController { @IBOutlet weak var textField: UITextField! override

问题 I am developing a jquery/PhoneGap application. I have been trying hard to get the buttons behave the way I want to. In short I am trying to achieve the following: I put a set of six Jquery-Mobile buttons (mini, normal or button-group). The above set needs to be in one horizontal line so I have put them in a div. The numbers of buttons and its text dynamically changes, so I need a CSS/JS trick that allows me to resize the button size and text based on the div/screen size. When I started with

问题 I want to customize the MFMailComposeViewController such that it has my custom images/buttons instead of the default "cancel" and "send" buttons. I tried googling for an answer but couldn't find anything that could help me. Any help is really appreciated. Thanks in advance.. 回答1: You can't change MFMailComposeViewController. Quoting the documentation: Important: The mail composition interface itself is not customizable and must not be modified by your application. 来源： https://stackoverflow

问题 I am trying to create Android product layout. In footer have two buttons it is fixed button. you can see images when I am scrolling up bottom two buttons attached in my layout. Please help how can i do? Image 1 Image 2 after scrolling xml <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="

问题 How do I build an array of buttons in a Winforms application? What I am trying to do is this: I have a lot of buttons in a sort of calendar arrangement, that are indicating time slots. IE: Monday0700Button, Monday0730Button, Monday0800Button, and so on in 30min intervals. I have a xml database, where one of the fields for appointments is <Duration> When the duration = 0.5hrs, and the <Time> field equals "07:00am", to color the 'Monday0700Button'. When the Duration is 1.0hrs, I want it to

问题 i am trying to change the color of text inside a button. So for example i have a button which is filled with white and the text is blue. When i click on the button i want these two colors to swap (text inside the button becomes white and the button blue). I have tried something like this: <item style="@style/ButtonText_Menue_Clicked" android:drawable="@drawable/button_menue_default" android:state_focused="true"></item> <item style="@style/ButtonText_Menue" android:drawable="@drawable/button

问题 I don't know much about WEB probramming, so feel free to ask if I'm missing any details. There is a certain website which I'm visiting very frequently, and it requires users to log in every time they visit. For the login page of this website, I'm trying to write down a userscript which will automatically log me in. I managed to fill in the form fields, but don't have any idea how to click the submit button by JavaScript. The below is a condensed version of the original login code. How can I

问题 I don't know much about WEB probramming, so feel free to ask if I'm missing any details. There is a certain website which I'm visiting very frequently, and it requires users to log in every time they visit. For the login page of this website, I'm trying to write down a userscript which will automatically log me in. I managed to fill in the form fields, but don't have any idea how to click the submit button by JavaScript. The below is a condensed version of the original login code. How can I

问题 I am trying to create a component in Angular 5 that will house a reusable template for a button. In different parts of my app buttons will call different functions, so I would like to be able to tell the given instance of the button what function to call. I know I could create an HTML tag for a button wherever I need it, but I was hoping I could create a reusable component so I can ensure formatting is consistent throughout the app. Error Got interpolation ({{}}) where expression was expected