C / C++ / MFC

7-Dec-04 3:34

How are you calling ShellExecute()?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Problem in autoprint

Member 12010138-Dec-04 20:01

Member 1201013

8-Dec-04 20:01

Hi David,
Thanks for showing interest.
I am invoking this function when a dialog-print button gets clicked.
ShellExecute("Print", "ABC.htm", NULL..);
I get the html page printed , but before printing, its opening up the print dialog. Do you know how to suppress!

renkumari

Re: Problem in autoprint

David Crow9-Dec-04 2:27

can i open same com port(eg:com1) in both two class

9-Dec-04 2:27

jega renga kumari wrote:
ShellExecute("Print", "ABC.htm", NULL..);

This produces the same result as if you had right-clicked the file in Windows Explorer and selected Print. I do not know of a way to circumvent the Print dialog box.

My first guess would be an SDI application that used a CHtmlView. You could then programmatically print whatever was in the view.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

vc-programmer-6-Dec-04 22:23

vc-programmer-

6-Dec-04 22:23

i use serial communication both two class.
first,i open com port from one class for receiving data and displaying data in the dialog.
and i receive data from com.
this is fine work..
samelly,i open com port from another class in my application for displaying another format in another dialog.
in case, i have problems.
it doesn't work.
i have not receive data from com port.
i want to know
can i open same com port(eg:com1) in both two class within one application?

Re: can i open same com port(eg:com1) in both two class

Cedric Moonen6-Dec-04 22:29

Cedric Moonen

6-Dec-04 22:29

No, you can only open a COM port once. So, you'll need to share the handle of the port to be able to read/write data from another class

displaying graphs

doneirik6-Dec-04 22:21

doneirik

6-Dec-04 22:21

Hi I´m quite new to VC++ .NET, and I´m building an application that is going to display graphically the readings from a sensor.
What kind of container (if container is the right word) should I use for displaing the graph?

Appreciate any suggestions,
doneiriik

Re: displaying graphs

Andrew Walker6-Dec-04 23:30

Andrew Walker

6-Dec-04 23:30

We found that NTGraph controls (below) were fantastic on my last project. Very easy to use, easy to control and lots of functionality. If all else fails you could always save out as comma delimited files and use excel or excel automation as an alternative.

2D NTGraph
3D NTGraph

If you can keep you head when all about you
Are losing theirs and blaming it on you;
If you can dream - and not make dreams your master;
If you can think - and not make thoughts your aim;
Yours is the Earth and everything that's in it.

Rudyard Kipling

Manifest problems

Gemini_II6-Dec-04 21:58

Gemini_II

6-Dec-04 21:58

I have a CToolbarCtrl with an CEditControl and a CComboBox in it.
In order to have a tooltip for those controls I added ON_NOTIFY_EX(TTN_NEEDTEXT, 0, OnToolTipText)
to the toolbar. This solution worked fine until I added Manifest to the application.
With manifest I don't get the wanted tooltip. OnToolTipText doesn't get called.
Does anyone how to solve this problem?

Dialog Box

max_gundam156-Dec-04 21:28

max_gundam15

6-Dec-04 21:28

How to make my dialog box always display on top?

On Visual C++ 6.0, how to I identify a user who is having what kind of privileges? (i.e admin privilege, etc)

Re: Dialog Box

toxcct6-Dec-04 21:40

6-Dec-04 21:40

repost..... Mad | :mad:

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Dialog Box

namaskaaram6-Dec-04 22:01

namaskaaram

6-Dec-04 22:01

if u want it to be on top alwayz....then u can find that option in the dialog properties(check the modal option).....

if u want it to be dynamic(that is made on top when the user clicks that option).....

try using this command.....

this->SetWindowPos(&CWnd::wndTopMost ,rect1.left,rect1.top,rect1.right-rect1.left,rect1.bottom-rect1.top, SWP_SHOWWINDOW);

well i hope that helpz.....

happy programmin.....

cheerz.....
Big Grin | :-D

Re: Dialog Box

David Crow7-Dec-04 3:37

7-Dec-04 3:37

max_gundam15 wrote:
How to make my dialog box always display on top?

On top of what, all other windows in your application (this is a modal dialog), or all windows in general (this is a system model and is used only in extreme cases)?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

sscanf() vs atof() !?

toxcct6-Dec-04 21:13

6-Dec-04 21:13

Hi everybody,

i've been having a strange behavior of the sscanf() function, which i replaced then by atof() (that works fine now).
i would like to repport this here to see if anyone has already encountered this before, and if any explaination was posted...

here is a sample of the code :

CString strVersion = <font color=#808080>"2.05"</font>;
<font color=#0000FF>double</font> dVersion = 0;
<font color=#008000>//...</font>
sscanf(strVersion, <font color=#808080>"%f"</font>, &dVersion);  <font color=#008000>// dVersion is about 3.846..........E-314</font>
 
dVersion = atof(strVersion);         <font color=#008000>//Works fine</font>

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Stlan6-Dec-04 23:50

Stlan

6-Dec-04 23:50

As indicated by the "%f", dVersion should be declared as a float and not as a double.

toxcct7-Dec-04 21:23

7-Dec-04 21:23

false.
%f is for both floats ans doubles

TOXCCT >>> GEII power
[toxcct][VisualCalc]

David Crow7-Dec-04 2:58

7-Dec-04 2:58

You can either change dVersion to a float (not recommended), or change the format specifier to use "%lf" instead. In either case, the third parameter being passed to sscanf() must be a pointer to dVersion.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

toxcct7-Dec-04 21:26

7-Dec-04 21:26

DavidCrow wrote:
In either case, the third parameter being passed to sscanf() must be a pointer to dVersion.

yes, sorry, i forgot it while writing my post...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Nemanja Trifunovic7-Dec-04 5:01

Nemanja Trifunovic

7-Dec-04 5:01

Do yourself a favor and use Boost lexical cast[^] for such conversions.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

David Crow7-Dec-04 7:28

7-Dec-04 7:28

Wouldn't that be akin to driving a brad with a sledge hammer?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Nemanja Trifunovic7-Dec-04 8:27

Nemanja Trifunovic

7-Dec-04 8:27

Why? lexical_cast is intended exactly for such scenarios. All he needs to do is to include a header file and then to use it like:

double dVersion = lexical_cast<double>("2.5");

Much easier than sscanf and atof, isn't it? Not to mention that it throws in case of error, unlike atof which returns 0

David Crow7-Dec-04 8:57

7-Dec-04 8:57

How is

double dVersion = lexical_cast("2.5");

any easier than

double dVersion = atof("2.5");

The former requires at least another header file while the latter does not.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Nemanja Trifunovic7-Dec-04 9:10

Nemanja Trifunovic

7-Dec-04 9:10

For one thing, there is only one lexical_cast and for each type of conversion (string to float, string to int, int to float...) you have a different version of ..to.. function.

But, even more important, atof is simply broken. Consider:

int i = atoi (argv[1]);
if (i == 0)
{
// Is argv[1] zero, or an error occured?
}

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

David Crow7-Dec-04 9:18

7-Dec-04 9:18

The concern was which statement easier to use in a specific context, not which was better adept at error handling or which was more robust.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

toxcct7-Dec-04 21:29