Code:
class DialogBox(Frame):
Let me know whether this works.
boxfish
Last Activity: Jul 11 '09, 08:49 PM
Joined: Mar 15 '08
Location: California
-
DialogBox needs to inherit from the Frame class. Make it
Also, if it's a dialog box, you need to tell it which window is its parent. When you create a DialogBox object, pass it its parent window instead of None.
Let me know whether this works. -
You need to be checking cin.fail before you do anything with the number, because if the user enters a letter then the number may contain a garbage value. You should probably be dealing with negative numbers and letters in the same loop. Something like
...Code:while (true) { cout<<"\n Enter the weight of the package to be delivered "; cin>>weight; if (cin.fail()) { // FixLeave a comment:
-
It's tricky to do this without telling the user off before he/she has entered anything. Here is what I would do:
Code:while (true) { cout<<"\n Enter the weight of the package to be delivered "; cin>>weight; if (cin.fail()) { // Fix it and tell the user off. } else { break; } }Leave a comment:
-
To use the code I posted, you need to include <string>. I don't like having to include another header file just to put junk in, but it's the easiest way to do it.Leave a comment:
-
While that code will work, it is doing a lot more work than it needs to. The fact that the for loops are nested means that the inner one is being executed over and over again. Try this:
I hope this is helpful.Code:entryDigits = [] for i in self.entries: if i.get(): entryDigits.append(int(i.get()))Leave a comment:
-
If the user enters a letter, the cin.fail flag will be raised. You will need to clear it with cin.clear and remove the offending letter or letters from the stream somehow. Do something like
I hope this helps.Code:if (cin.fail()) { cin.clear(); string junk; cin >> junk; cout << "No more letters, please!" << endl; }Leave a comment:
-
I think you also need to override the processEntries function so it calls the setStatus function. As for the setStatus function, I think you are treating the list of entries like a list of strings. I suggest getting a list of strings from the entries then working with that. But then again, the entries can only contain digits, right? How about making a list of ints:
...Code:entryDigits = [] for i in self.entries: entryDigits.Leave a comment:
-
Sorry for the long response time. You can just define a new setStatus function in your new class and it will override the old one. If you want to call the old one from the new one, do this:
Code:EntryFrame.setStatus(self)
Leave a comment:
-
So do you want to create an EntryFrame object as a member in your Controller class? Here is how you would do that:
Let me know if this is not what you're after or if you're having a problem with it.Code:# Put stuff for EntryFrame class up here class Controller(object): def __init__(self): self.myEntryFrame = EntryFrame(None, DIGITS) myController = Controller()Leave a comment:
-
If you don't want to specify a parent, make an EntryFrame object like this:
I hope this is helpful.Code:self.myEntryFrame = EntryFrame(None, DIGITS)
Leave a comment:
-
the clock() function from the <ctime> include file tells you how many clock ticks have passed since your program was launched. You can divide it by CLOCKS_PER_SEC to get this length in seconds. I would define a constant
CLOCKS_PER_10MS = CLOCKS_PER_SEC / 100;
So to wait for 10MS, Take the current clock value, add CLOCKS_PER_10MS to it, and use a while loop to wait for clock to be greater than that value. It should actually...Leave a comment:
-
Pseudocode goes something like
Which of these things are you having trouble with?Code:while (true) { wait for 10 ms generate random number display number wait for 10 ms backspace number }Leave a comment:
-
Blink a random number on the screen? Do you want to show this number in the console, just printed with cout?Leave a comment:
-
Wow, that works! That really baffles me. What is the global statement doing? Is it actually turning them into global variables? I thought the global statement only made variables available for the function that used it. I definitely learned something today....Leave a comment:
-
You're welcome, glad it worked.Leave a comment:
-
The text entries are global variables, so evClear is not allowed to access them unless you explicitly say so. Use the global keyword:
I hope this helps.Code:def evClear(): global q1_data, q2_data, q3_data, q3_data2 q1_data.delete(0,END) q2_data.delete(0,END) q3_data.delete(0,END) q3_data2.delete(0,END)Leave a comment:
-
I haven't written a Tkinter program for a while, but it looks like you can clear a text entry like this:
Is that what you're looking for?Code:myEntry.delete(0, END)
Leave a comment:
-
Yeah, all my loop variables are called i, j, k, l, m, n, o, etc. It makes my nested loops unreadable.
Edit:
Wow, urllib is a built in library I can use! I had no idea.Leave a comment:
-
Sorry, bvdet, but read this. How about calling it file_lines instead?...Leave a comment:
-
In the book I have, Python for the Absolute Beginner, it's done something like this. The object has a member named screen, which is a reference to the main Screen object.
...Code:def moved(self): x, y = self.get_pos() if self.screen.is_pressed(games.K_LEFT): x -= 1 if self.screen.is_pressed(games.K_UP): y -= 1 if self.screen.is_pressed(games.K_RIGHT):Leave a comment:
No activity results to display
Leave a comment: