C / C++ / MFC

Re: What is wrong with this template?

John R. Shaw26-Dec-04 13:13

John R. Shaw

26-Dec-04 13:13

All those template functions (in StackA.cpp) used by the templated class must be in the header file not in a seperate CPP file. Otherwise the compiler only has the prototypes for functions it has not generated. Therefore, you will get "unresolved external...", because they do not exist.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

How to use SetTimer( ) when I create MFC Regular Dll?

tttyip25-Dec-04 6:13

tttyip

25-Dec-04 6:13

I've created a MFC Dll, however, when I use the SetTimer function in the Dll, the external application gets error assertions.

Here is my use of the MFC Dll:
DLLClass::void Test()
{
SetTimer(1000, 5000, NULL);
}

DllClass::OnTimer(.....)
{
.....do something when the timer message arrives
}

Here is my external application:

DllClass myclass;
ExtClass::SetMyTimer()
{
myclass.Test;
}

When I call the SetMyTimer function, I got error, how should I do if I want to use SetTimer Function in the MFC Dll?

thanks

Re: How to use SetTimer( ) when I create MFC Regular Dll?

Ravi Bhavnani25-Dec-04 6:32

Ravi Bhavnani

25-Dec-04 6:32

SetTimer() is a method of the CWnd class. Your usage of the function invokes the globally scoped ::SetTimer() Windows API call which takes a window handle as the first argument. Passing a value of "1000" will likely cause abnormal behavior.

You should pass your DLLClass object a valid CWnd (or window handle) which can be passed to the SetTimer() call within Test().

/ravi

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Control focus question

Deian25-Dec-04 5:09

Deian

25-Dec-04 5:09

Hello,

Does anyone know how to check if the current focus is over certain control, i.e. IDC_EDIT1 or IDC_EDIT2? Confused | :confused:

Thanks in Advance!

Re: Control focus question

Michael Dunn25-Dec-04 5:36

Michael Dunn

25-Dec-04 5:36

Call GetFocus() to get the HWND of the window with the focus, then GetDlgCtrlID() to get its ID.

--Mike--
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Re: Control focus question

Deian25-Dec-04 5:53

Deian

25-Dec-04 5:53

Thank you

Converting char to int and int to char

sacoskun25-Dec-04 5:01

sacoskun

25-Dec-04 5:01

Hi,

I would like to convert a char into an int and vice versa.

For instance;

char a = '3';<br />
int a = 3;

Thanks in advance,

Re: Converting char to int and int to char

Michael Dunn25-Dec-04 5:40

Michael Dunn

25-Dec-04 5:40

See the FAQ
6.3 How can I change a number into its string representation, or vice versa?[^]

--Mike--
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Re: Converting char to int and int to char

Mircea Puiu25-Dec-04 5:53

Mircea Puiu

25-Dec-04 5:53

One way would be:

<br />
============================<br />
char chA = '3';<br />
int nA;<br />
char chValue[32]; // actually 2 it's enough here :-))<br />
chValue[0] = chA;<br />
chValue[1] = 0; // null terminated string<br />
nA = atoi(chValue);<br />
============================<br />
char chA;<br />
int nA = 3;<br />
char chValue[32];<br />
itoa(nA, chValue, 10);<br />
chA = chValue[0];<br />
============================<br />

SkyWalker

Re: Converting char to int and int to char

sacoskun25-Dec-04 6:40

sacoskun

25-Dec-04 6:40

Hi Mircea, I used both the array and * implementations and it worked, thank you very much...

Thanks to Dunn also.

Re: Converting char to int and int to char

sacoskun25-Dec-04 7:09

sacoskun

25-Dec-04 7:09

I also would like to ask that is it possible to store for example number 14 in one character array element?

I mean;

if( myCharArray[2] == 14 )<br />
cout << "I want this" << endl;

Thanks,

Re: Converting char to int and int to char

mirex25-Dec-04 7:28

mirex

25-Dec-04 7:28

if number is only one digit then its simple.

char c = '3';

// char => int
int i = c - '0';

// int => char
c = '0' + i;

how to converte a sequence of jpeg to a movie?

max_xiayi25-Dec-04 2:20

max_xiayi

25-Dec-04 2:20

Any source code?

please contact:
max_xiayi@hotmail.com

Importing Dialog

Sheh Shehpori24-Dec-04 23:09

Sheh Shehpori

24-Dec-04 23:09

Friends,
I've created an application in VC++ 6.0. There is a dialog in it on which i dropped various controls and associate class with that dialog.

Now, i am creating another project in VC++ 6.0. I want to use the same dialog template and its class in this project.

Please tell me how can i "import" dialog from one project to another. Obviously i can reuse class header and cpp, but how can i import dialog template ??

Re: Importing Dialog

Dennis Gourjii24-Dec-04 23:41

Dennis Gourjii

24-Dec-04 23:41

If you mean the dialog resource, do it this way. Open the old project and simply copy the dialog resource to clipboard. Then, open the new project and paste it into its resource script in the resource view window. Should work.

Re: Importing Dialog

Shah Shehpori25-Dec-04 0:06

Shah Shehpori

25-Dec-04 0:06

unfortunately this is not working in case of different projects. If we have two dialogs in same project then we can copy-paste resources.

Re: Importing Dialog

Michael Dunn25-Dec-04 5:43

Michael Dunn

25-Dec-04 5:43

Open the new project normally and go to the resource view tab. Then click File|Open and open the .rc file in the old project. Then you can drag and drop resources from the old .rc file to the new project's resource view.

--Mike--
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CListCtrl related

Aamir Butt24-Dec-04 21:39

Aamir Butt

24-Dec-04 21:39

Hi All, my CListCtrl's DeleteAllItems() is not working. Although it is returning me non-zero and according to MSDN it returns non-zero when it succeeds but it is not erasing the contents of List control. Any help/advice?

Regards,

Still Alone in this beautiful world Frown | :(

My Articles

Re: CListCtrl related

Aamir Butt24-Dec-04 21:57

Aamir Butt

24-Dec-04 21:57

Sorry, I have done it. It was another fault. Blush | :O

Still Alone in this beautiful world Frown | :(

My Articles

Re: CListCtrl related

Anonymous25-Dec-04 3:26

Anonymous

25-Dec-04 3:26

you can send the message LB_RESETCONTENT to the list box

Question About Modems

Rassul Yunussov24-Dec-04 18:37

Rassul Yunussov

24-Dec-04 18:37

How to handle the modem connection on the line?
For example i want to call a connection dialog, where i choose the provider of internet (simple connection dialog in windows - how to call it?, i see it when i open the Internet Explorer - it offers me to get online, i want to call such window). Then i want to know - if i connected, so if the connection breaked, i want to handle this situation in my programm - how to do it?

Re: Question About Modems

Michael Dunn25-Dec-04 5:51

Michael Dunn

25-Dec-04 5:51

Call InternetDial() to show the dialing UI.

--Mike--
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Locking the desktop...

dSolariuM24-Dec-04 17:21

dSolariuM

24-Dec-04 17:21

Hello everyone,
I am working on a network program and
I want to lock the desktop and then put
something like a edit box on it.
How can I do that?
Best Wishes.
Thank.

maybe someone can help me out.

donttrip24-Dec-04 16:56

donttrip

24-Dec-04 16:56

Hello maybe one of you guys can help me out. im trying to write a program where it will execute another program with command line parameters.
Like in a bat file i would use
program.exe %param
just put it in a bat file and be on my way.
I would like to do this in C++. I need to make a exe that will execute a file.exe with %param aka %1.
plz lemme know. thanks.

Re: maybe someone can help me out.

Rassul Yunussov24-Dec-04 17:51

Rassul Yunussov

24-Dec-04 17:51

Maybe you can use the "system()" function...

#include <process.h>
void main(char args[])
{
 system(args);
}
so it can be for example as MSDN shows:
system( "type readme.txt" );

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