Form Functions. Help Needed.

Question

0.00/5 (No votes)

See more:

Hello Everyone.

I'm working on a Calculator for a game. So i decided to try to code the calculator to be as user friendly as possible.

What i need help with is the following;

Changing the effects of another form dependent on the button i click on my mainform.
Example;

If i have two forms, MainForm and SubForm. In the MainForm i have a textbox, txtTotal, two buttons, btnAdd and btnSubtract.

In the SubForm i have a Textbox, named txtValue, two buttons, btnOK and btnCancel.

If the btnAdd from the MainForm is clicked, SubForm Loads and the value of txtValue will be ADD to the txtTotal when the btnOK is clicked.

So e.g. txtTotal already have a value of 5, in txtValue(from SubForm) i put in an additional 5 and hit ok - txtTotal will now change its value to 10.

However if the btnSubtract is clicked, SubForm Loads and the value of txtValue will be Subtracted from the txtTotal when the btnOK is clicked.

So e.g. txtTotal will now be 0, if SubForm.txtValue and MainForm.txtTotal is 5.

Also would like to know how to change a image dependent on MainForm btns. Example the btnAdd will set the background of SubForm to "C:\Some location" and the btnSubtract will set the background of SubForm to "C:\Some other Location"

also does any of you know any useful links to a guide about Class's and effects ? :)

Posted 26-Sep-12 23:24pm

SimonB#2149

Updated 26-Sep-12 23:38pm

v5

Add a Solution

Comments

Malli_S 27-Sep-12 5:27am

Is this kind of homework?

SimonB#2149 27-Sep-12 5:29am

Sort of yes :) But not exactly because i'm adding a few extra feutures to my calculator :) But this is not a part of the specific homework :P

SimonB#2149 27-Sep-12 6:28am

I'm really bad at Programming, but thanks for your solution OriginalGriff.. However - can i have some explanations, guides or w/e on how to do so ? :)

SimonB#2149 27-Sep-12 13:31pm

Anyone who have something else to say ? :)

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2012-09-27T00:11:00

The way to do it is to create a new event in the subform: call it NewValueAvailable or similar. Also add a string Property to the subform which returns the TextBox value.
Your Mainform them adds a handler to it when it displays the SubForm.

When the button is pressed in the SubForm, it signals the event.
The main form handler reads the new value via the SubForm property, and adds it to the total.

This way, the subform does not need to know anything about how the main form works, and vice versa.