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Richard
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 Posted: Sat Nov 22, 2003 2:30 am Post subject: Synchonizing EditBox I/O execution (Reply) |
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NOTE:
-----
I do not seem to be able to "reply" so that all
back and forth communication falls under the same posting.
In this last attempt, the mail administrator bounced back the reply.
If you could instruct me as to the correct manner for replying,
that would be a great help.
(PS: I checked out the web sites for searching for FAQ. Thanks.)
ROK
----------------------------------
I guess that I should not have even mentioned dialog windows; they really
have nothing specifically to do with my question. They were just an example
of how the OS handles their I/O request before moving on to subsequent code.
I thought that I was helping out the situation by not muddying the waters
with unnecessary code, but here is an example of what I want to do.
(code is within a button's "OnClick" handler)
int x = 1; // (leading code)
MyEditBox->Visible=true;
MyEditBox->SetFocus(); // Now I want the OS to allow me to enter NEW
data.
// Not just act upon what WAS THERE.
// Obviously, then, part of the problem
// (if the 1st part is possible) is how to
tell
// the OS that I am now finished entering data
and
// control should now revert back to this
portion of the code and
// handle the "if()" statement which uses the
newly
// entered data in the edit box.
if(MyEditBox->Text = "quit") return;
int y = 2; // (following code)
PS: "George" Suggested using "OnExit" as a possible solution to part 2 of my
question.
But an OnExit handler defines what to do when an "exit" has been
accomplished. What I need to know is HOW to exit.
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Timothy H. Buchman
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| Posted: Sat Nov 22, 2003 2:45 am Post subject: Re: Synchonizing EditBox I/O execution (Reply) |
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"Richard" <pacenita (AT) cox (DOT) net> wrote
| Quote: | In this last attempt, the mail administrator bounced back the reply.
If you could instruct me as to the correct manner for replying,
that would be a great help.
|
What sort of newsreader program are you using? Are you using a
web-based interface?
| Quote: | I guess that I should not have even mentioned dialog windows; they
really
have nothing specifically to do with my question. They were just an
example
of how the OS handles their I/O request before moving on to
subsequent code. |
It appears that you are asking a general question about Windows
programming as an event-driven structure. Have you written Windows
programs with other tools than BCB before? There are a number of good
essays on this topic around, although I don't have a link handy this
instant.
If you think my comment might be correct, your favorite search engine
on "Windows Programming Event Driven" might produce a lot of material.
My point is that BCB isn't unique in this respect. The "Message Box"
model you mention is just like DOS programming, with a pause for
input. Windows programs aren't usually most effective when written
that way.
--
Timothy H. Buchman
========================================
City Center Theater, New York NY
mail address tbuchmanPLEASE(at sign)REMOVEcitycenterD O Torg
Search .borland message archive on http://www.tamaracka.com/search.htm
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Remy Lebeau (TeamB)
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| Posted: Sat Nov 22, 2003 2:48 am Post subject: Re: Synchonizing EditBox I/O execution (Reply) |
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"Richard" <pacenita (AT) cox (DOT) net> wrote
| Quote: | I thought that I was helping out the situation by not muddying
the waters with unnecessary code, but here is an example of
what I want to do.
|
What you ask for is not possible in the manner that you have described it.
You'll have to break up your code into several different methods, ie:
void __fastcall TForm1::Button1Click(TObject *Sender)
{
MyEditBox->Visible = true;
MyEditBox->SetFocus();
}
void __fastcall TForm1::MyEditBoxExit(TObject *Sender)
{
int x = 1;
if( MyEditBox->Text = "quit") return;
int y = 2;
//..
}
| Quote: | But an OnExit handler defines what to do when an "exit"
has been accomplished. What I need to know is HOW to exit.
|
Simply click on something else. The OnExit event is triggered when the Edit
Box loses focus. If you don't want to click manually, you could have the
user press the Enter key after typing in the new text, and then use the
OnKeyPress event to catch the Enter key and execute the new code, ie:
void __fastcall TForm1::MyEditBoxKeyPress(TObject *Sender, char &Key)
{
if( Key == VK_RETURN )
{
Key = 0; // cancel the keystroke
int x = 1;
if( MyEditBox->Text = "quit") return;
int y = 2;
//..
}
}
Gambit
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JD
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