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A DLL is a compiled "executable" (not directly) exporting function that one or more applications may call. Since applications are sharing DLLs, if you change a function in the DLL, all the applications will "change" if they call the modified function.
A class is a structure containing function and member variables, who may by instanciated one or more times in objects. To understand the difference between classes and objects, try to remember this comparaison with cook : the class is used to make cakes, objets are cakes.
Then, imagine your class have a function called EatPie() and you have instanciated 3 objects. For each object, you may call EatPie() and potentially decrease a counter counting the number of pie of each cakes.
Since I can't spend more time to explain you classes and DLL, I recommend you to read books or parse the Web about infos.
Cheers,
Florian
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classes are where you go to learn things, like what a DLL does.
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hahaha real funny u make it obvious that you dont know either
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Anonymous wrote:
classes are where you go to learn things, like what a DLL does.
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CLASS:
---------------------------------
DEFINITION:
declaration of an object.
EXPLANATION:
Imagine a button, a button has a color, a text and an icon (all those parameters are member variables of the button class).
A button also have a function that is called when the button is pressed (a member function).
SAMPLE:
class cbtn
{
private:
COLORREF m_clrColor;
CString m_csText;
CIcon m_Icon;
void OnClick();
};
Once you have the class declared, you can instantiate (define - create objects of) that class so many times...
DLL:
---------------------------------
DEFINITION:
executable that exports functions and variables to other executables.
EXPLANATION:
You can build dll's or use other dll's that are installed in your computer, those programs can be used from any program that knows how to call their functions or variables...
imagine that you create always a program that (it's just an explanation and the sample will be very stupid) add two numbers and the code to do so is very long (I adviced you that that would be stupid...) then you could consider to place that code in a DLL and call that code from your programs...
FINALLY
---------------------------------
To go to class to learn is interesting if you can't do it, think of reading a good C++ book for learning about classes and another Windows programming book for DLL's...
Hope this helps...
PS:
the samples are just introductory and they have my point of view, they are not the purest and best ones, but they can help you to get the starting point when reading some info regarding this.
NOTE:
my english is not my best.
Hope this helps...
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Ok, This is the same pathetic person who could not get his window app to work. It now works. To whoever told me about the 4 platforms, I think I will go with .NET. I was using MS Visual C++ .NET 2003 and none of my programs would compile. I am wondering why. Even a simple hello world app would not work. Please tell me a bit about .NET since i would like to use that. thanks.
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I need to retrieve CColorDlg "Basic colors" palette. The custom colors are placed in CHOOSECOLOR structure - how can I get the basic colors?
Regards,
BB
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It would be nice if I could hide some text in a static control. I experimented a bit, and it looks like anything inserted after a \n is not displayed.
I'm wondering if that's a predictable behaviour, or might it be a function of my particular setup. If it's predictable, and safe, I'll go ahead and use it.
Any thoughts?
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Why not use a hidden static? Though I must say that trying to "hide" something in the GUI sounds like a bad idea...
"was wir auch tun, wohin wir gehen
die illuminaten sind im system
sie kontrollieren überall
und 23 ist ihre zahl!"
23, welle: erdball
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It's not really hidden - your static control is probably only high enough to see the first line. Try expanding it, and you'll probably see the rest.
Dave
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You're right! It's probably reasonably predictable behaviour.
Thanks.
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But it's still not really hidden. If the user has Spy (or something similar) installed, they can trivially retrieve the hidden text. The GetWindowText() API will also return the full text in the control, even if called from another process.
Dave
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The intent was not to hide it as much as it was to encode some additional information in the text that the user wouldn't want to see. It's a long story...
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How to scroll to the line we want?
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What the hell are you talking about ?
Christian
NO MATTER HOW MUCH BIG IS THE WORD SIZE ,THE DATA MUCT BE TRANSPORTED INTO THE CPU. - Vinod Sharma
Anonymous wrote:
OK. I read a c++ book. Or...a bit of it anyway. I'm sick of that evil looking console window.
I think you are a good candidate for Visual Basic. - Nemanja Trifunovic
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My guess scrolling an edit/multiline static to a specific line.
Tim Smith
I'm going to patent thought. I have yet to see any prior art.
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.oO(how can I put Christian on my ignore list)
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Easy - go to Code Guru.
Did you ask the question ? Or are you just on the same level as the answer, and so the question actually made sense to you ?
Christian
NO MATTER HOW MUCH BIG IS THE WORD SIZE ,THE DATA MUCT BE TRANSPORTED INTO THE CPU. - Vinod Sharma
Anonymous wrote:
OK. I read a c++ book. Or...a bit of it anyway. I'm sick of that evil looking console window.
I think you are a good candidate for Visual Basic. - Nemanja Trifunovic
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Christian Graus wrote:
Easy - go to Code Guru.
ROTFLMAO. You are so cruel. Keep it up.
Chris Meech
"what makes CP different is the people and sense of community, things people will only discover if they join up and join in." Christian Graus Nov 14, 2002.
"AAAAAAAAAHHHHHH!!!!! Those leaks are driving me crazy! How does one finds a memory leak in a garbage collected environment ??! Daniel Turini Nov. 2, 2002.
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Whatever you are drinking... Can I have some?
"was wir auch tun, wohin wir gehen
die illuminaten sind im system
sie kontrollieren überall
und 23 ist ihre zahl!"
23, welle: erdball
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"The EM_SETCUEBANNER message sets the textual cue, or tip, that is displayed by the edit control to prompt the user for information. For more discussion of this, see the Remarks section.
Syntax:
To send this message, call the SendMessage function as follows.
SendMessage((HWND) hWndControl,(UINT) EM_SETCUEBANNER,(WPARAM) wParam,(LPARAM)lParam);
wParam:
Not used; must be zero.
lParam:
Pointer to a Unicode string that contains the text to display as the textual cue.
Used for:
An edit control that is used to begin a search may display "Enter search here" in gray text as a textual cue. When the user clicks the text, the text goes away and the user can type.
Note To use this API, you must provide a manifest specifying Comclt32.dll version 6.0. For more information on manifests, see Using Windows XP Visual Styles.
Message Information:
Header Declared in Commctrl.h
Minimum operating systems Windows XP "
This was taken from the MSDN website. I am trying to implement this into my program but whenever I try to compile my program I get an error "C2065: 'EM_SETCUEBANNER' : undeclared identifier"
I tried to #include "commctrl.h" but it didnt help.
Im using Visual Studio .Net, Windows XP & a MFC7 Dialog Application.
VS automaticly creates a manifest file so that could not be a problem. When I hover the mouse pointer over the 'EM_SETCUEBANNER' text I get a tooltip that says "EM_SETCUEBANNER (ECM_FIRST + 1)"- so it looks like its defined. Realy hope someone can help.
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