jgabase's Feed - Programmer's Heaven

Re: literal instructions

Sat, 11 Jun 2011 02:24:47 -0700

Posted a 'reply on the C and C++ forum.

This post has been deleted.

literal instructions

Thu, 12 May 2011 16:00:31 -0700

Posted a 'new message on the C and C++ forum.

Hi guys I´m trying to execute a formula, for example pow(x,2), comming from an Edit1 in the main form of my program and show result in an Edit2. However I don´t know how to convert this String in a literal instruction that the program can execute;

please suppose that we have:

#include <math.h> ...etc

double x=3;
String formula = pow(x,2);
Edit2->Text=formula;
// This works and Edit2 shows a value of 9

However when the String is obtained from an Edit, this is what happens:

double x = 3;
String formula = Edit1->Text;
Edit2->Text=formula;
// This doesn´t work and Edit2 shows the formula as a characters string, I mean "pow(x,2)"

How can I fix that?
Many thank in advance

Scrolling down a Memo

Fri, 24 Jul 2009 04:19:46 -0700

Posted a 'new message on the C and C++ forum.

I´m writing data into a file an displaying it in a Memo (In BCBuilder6) but even when the text is getting biger, the Memo only shows the begining of the file. ¿How can I do for the program to scroll down the text automatically to the end of the Memo?
Many thx

_________________________________________
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I got it... Use Memo->Add()function

Re: Transparent memo box

Fri, 20 Mar 2009 04:00:39 -0700

Posted a 'reply on the Delphi beginners forum.

Is it possible to use this component under C++ Builder 6?

Re: Rotate Image

Thu, 18 Dec 2008 14:35:45 -0700

Posted a 'reply on the C++ Builder forum.

You have three options:

- 1. I have seen components for c++ builder that allow you to rotate images.
- 2. Do not try to rotate your Image. Draw it on real time.
- 3. You can overlay a lot of images (all rotated on different angles) and hide or show them dinámically.

best regards

Getting info about the position of external windows

Wed, 17 Dec 2008 10:53:01 -0700

Posted a 'new message on the C++ Builder forum.

Getting info about the position (Coordinates relative to screen)of external windows.
What can I do to detect the position of the window of other programs?
A sample of source would be great. Thanks

Detecting External Mouse Events

Wed, 17 Dec 2008 10:45:11 -0700

Posted a 'new message on the C++ Builder forum.

Detecting External Mouse Events.
I need help with detecting mouse coordinates and clicks beyond my application. I´m using SetWindowsHookEx(WH_MOUSE... but it only detects mouse events in my program. As soon as the cursor leaves my application it stops getting mouse data.

It would be great to have a sample of source