C / C++ / MFC

Re: I'm Looking for Visual C++/.Net C++ training...

4-Aug-03 13:49

Probably windows programing, that's what I'm weakest at. Plus, work won't pay for books and practice, even if I'm doing it at work. Improving myself in order help the company is "not my job" and it has to have an immediate value-added componant to the project at hand. None of this silly long term benefit stuff! Plus, there is no "proof" I did it without a lousy piece of paper saying I did it at the end.

Besides, it would be approved time away from the building. With books, the boss (if he did approve it) would interrupt any time, just like if I have lunch at the building.
Thanks for the suggestion
Joe

valikac4-Aug-03 17:43

valikac

4-Aug-03 17:43

One possible problem with "training" is that I believe it is way too short. On the other handle, learing windows programming using books and doing practices is extremely effective.

The key to learning windows programming is practice and to never give up. Good luck.

Kuphryn

What is a mirror display driver exactly ?

4-Aug-03 6:21

I need to access the underlying display I/O at system level for implementing a Terminal Services like service (display output redirection). From what it looks like I have two options:

1. API hooking - slow, cumbersome, low-level, half-documented and error prone (not to mention unportable)
2. "Mirror" driver technique - fast, available but a bit hidden from public so to speak.

Which one to choose, and how to implement them ? Can any of you guys help me out ?
Are there any tutorials available on this ? I am already briefly familiar with what DDK says about this, and generally with the NT driver programming theory, although I was never even near all this stuff.

excel web component

caustiK4-Aug-03 5:35

caustiK

4-Aug-03 5:35

can anyone explain how to use this control? i've tried using the automation stuff on msdn, but i get assert errors - i'm not getting the right IDispatch or something. can you even do it this way? or is there a way to use automation to insert an excel sheet into the app? i'm using an mfc dialog. any help appreciated Big Grin | :-D

:: Prototyping a Derived Class ::

Anonymous4-Aug-03 5:33

Re: :: Prototyping a Derived Class ::

4-Aug-03 5:33

Here is a *fun* problem:

How do you prototype a derived class?

To add some code to the situation:

This is what I want to do:
namespace ManagedConsoleXPControls
{
public __gc __abstract class ConsoleControlBase : public CollectionBase;
}

However, good 'ol VS 2003 gives me a nasty error:

c:\Projects\Windows Forms\Managed Console\MC - Console XP\MCXP-Prototypes.h(20): error C2143: syntax error : missing ',' before ';'

I'm quite certain that this error pertains to this single line in the code.

Does anyone have any bright ideas?

Michael Dunn4-Aug-03 10:27

Michael Dunn

4-Aug-03 10:27

There is no such thing as a prototype, but there is a forward declaration, which basically tells the compiler "this symbol is the name of a class that I'll define later".

namespace blah 
{
  class ConsoleControlBase;
}

--Mike--
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Re: :: Prototyping a Derived Class ::

Anonymous4-Aug-03 16:32

Re: :: Prototyping a Derived Class ::

4-Aug-03 16:32

So be it, forward declaration.

Yet, I still need to declare the class as being derived from another class. This is necessary because I must call functions specific to its base class before I formally declare it.

Bob Stanneveld4-Aug-03 21:59

Bob Stanneveld

4-Aug-03 21:59

The forward declaration should work! Why can't you just declare the class before those functions are called?

A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.

Exception Handling

Kash4-Aug-03 5:33

Kash

4-Aug-03 5:33

Hi,

I am trying to catch a user exception. The user presses two buttons. But the second button should only be pressed if the first one has else i should warn the user of an incorrect action.

any ideas>

kash

Anonymous4-Aug-03 5:38

4-Aug-03 5:38

Hmmmm, I wouldn't consider that an "exception" per se...

I see an "exception" as an error that occurs programatically, like a FileNotFound or the like.

This is more of a UI issue.

Anyway, I would simply set a bool value somewhere in your code, inside the Form class if you are using Windows Forms for example. Upon program initialization, set the bool to false. Everytime the user presses the first button, set the bool to true. When the user presses the second button, check whether the bool is true. If it isnt, show the user a MessageBox or echo the error somewhere where the user is gonna see it.

Hope this helps.

Kash4-Aug-03 5:39

Kash

4-Aug-03 5:39

Good idea, cheers

John M. Drescher4-Aug-03 14:20

John M. Drescher

4-Aug-03 14:20

Kash wrote:
But the second button should only be pressed if the first one has

Then disable the second button until after the user pressed the first.

John

Making an mfc program open source?

David Crow5-Aug-03 2:34

David Crow

5-Aug-03 2:34

John D. has provided you with the correct solution. If a control is not supposed to be interacted with until a certain condition exists, then disable the control, period.

Don't clutter your code with variables that just makes maintenance harder. It sounds great now, but you must always consider the code in the future.

keegan4-Aug-03 5:24

keegan

4-Aug-03 5:24

Suppose i want users to see all the code i've written for my project. I want to show them the dialogs, but i dont know what file they're stored in.

so, in addition to all the .h and .cpp files, what else should i include for users to download?

*.*
cin >> knowledge;

Michael P Butler4-Aug-03 5:30

Michael P Butler

4-Aug-03 5:30

.rc and resource.h for dialogs

and probably the contents of the res folder (icons, bitmaps etc)

Michael

'War is at best barbarism...Its glory is all moonshine. It is only those who have neither fired a shot nor heard the shrieks and groans of the wounded who cry aloud for blood, more vengeance, more desolation. War is hell.' - General William Sherman, 1879

vcplusplus4-Aug-03 5:35

vcplusplus

4-Aug-03 5:35

".RC" has the dialog info.

Why don't you just ship the whole project without the debug and release folders?

keegan4-Aug-03 5:41

keegan

4-Aug-03 5:41

well, i really want to show people specific things, not show them everything. i really want to let users see certain dialog boxes, and certain source code files, but i guess i can't if all teh dialog boxes are stored in one rc file. Frown | :(

*.*
cin >> knowledge;

Beer264-Aug-03 6:34

Beer26

4-Aug-03 6:34

i don't know if you're aware of this, but the users can see all your dialogs and resources anyway as long as they have your .exe file. All you have to do is open it as a resource in visualC++6.