Re: LPTSTR to float - C / C++ / MFC Discussion Boards

Re: LPTSTR to float

Cool Ju5-Dec-05 23:58

Cool Ju

5-Dec-05 23:58

Hi,

Add math.h and stdlib.h

Bye,
Cool Ju Cool | :cool:

Dream Ur Destiny

Re: LPTSTR to float

paper676-Dec-05 0:08

paper67

6-Dec-05 0:08

Doesn't work. Same error.

Re: LPTSTR to float

Member 15877415-Dec-05 23:45

Member 1587741

5-Dec-05 23:45

try using atof function

Re: LPTSTR to float

paper675-Dec-05 23:53

paper67

5-Dec-05 23:53

Yes, but I want to use a character neutral set function.

Thx

Re: LPTSTR to float

ThatsAlok6-Dec-05 0:53

ThatsAlok

6-Dec-05 0:53

paper67 wrote:
Is there any way to convert from a LPTSTR to a float value.

what about _tcstod function

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

-- modified at 6:54 Tuesday 6th December, 2005

Re: LPTSTR to float

paper676-Dec-05 2:49

paper67

6-Dec-05 2:49

That's the one I need.

Thx a lot.

Re: LPTSTR to float

ThatsAlok6-Dec-05 2:55

ThatsAlok

6-Dec-05 2:55

paper67 wrote:
Thx a lot.

My Pleasure

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: LPTSTR to float

Bob Ciora6-Dec-05 1:16

Bob Ciora

6-Dec-05 1:16

How about the old standby, sscanf? There is also a wide-character version, swscanf. If you've eliminated the whitespace around the string-represented floating-point value, then the following will work:

// input: CString sData

float fValue;

// sscanf will return the number of items pulled out of the string
int nResult = sscanf((LPCTSTR)sData, "%f", &fValue);
if( nResult != 1 )
{
    // Didn't find a floating-point value.  Take corrective action...
}

Bob Ciora

Re: LPTSTR to float

Rage6-Dec-05 1:32

Rage

6-Dec-05 1:32

wcstod() contained in <stdlib.h>

~RaGE();

RE: lib for usb cam video capture

9ine5-Dec-05 22:59

9ine

5-Dec-05 22:59

Is there ready lib or dll for VC++ to capture video from usb camera with available function to get a single captured frame to Memory Array in different types of byte stream (rgb,gray,yuv, etc...) or just in any one type?

9ine

Re: RE: lib for usb cam video capture

victoryelectorn12-Dec-05 18:28

victoryelectorn

12-Dec-05 18:28

if what cam ur using
if u r using logitech web cam
the sdk is avaliable in logitech site
u need to install driver first

any how ,if u r using any other u have lot many no of open sources
like vision, and lot many, search in google u will get lot many

All the best
bye

kattavictor

How to show the Sound Selection Dialog by calling Windows API

Albert19865-Dec-05 22:38

Albert1986

5-Dec-05 22:38

I found that windows sound recoder could show the "Sound Selection" dialog to let user set the format and attributes of the recorded audio file, some other programs could show the dialog too.
So I think there must be a windows API that could call this Dialog, I need it
in my program. Does anyone know how to call it?

http://www.yesalbum.com/v001/aisonbert/sound_selection_dlg.jpg[^]

Thanks in advance!

Bert

-- modified at 4:39 Tuesday 6th December, 2005

Re: How to show the Sound Selection Dialog by calling Windows API

Blake Miller6-Dec-05 9:53

Blake Miller

6-Dec-05 9:53

You can use some of the control panel functions and thus invoke it directly.
See this MSDN topic : Executing Control Panel Items

Coppying a VARIANT help required

arusmemon5-Dec-05 22:37

arusmemon

5-Dec-05 22:37

hi i want to copy a variant into void* variable i.e.

void* voidpvar;
VARIANT varvar;
i cant do voidpvar=varvar or varvar=voidpvar

What to do?
thanks

Re: Coppying a VARIANT help required

toxcct5-Dec-05 22:47

toxcct

5-Dec-05 22:47

VARIANT varvar = /* whatever */;
void* voidpvar = &varvar;

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20]

terminating execution of exe

shadrach_india5-Dec-05 22:21

shadrach_india

5-Dec-05 22:21

i want to terminate any running programme. is any API call. pls tell me Smile | :)

Re: terminating execution of exe

Khan Shere5-Dec-05 22:43

Khan Shere

5-Dec-05 22:43

TerminateProcess is what you are looking for.

Re: terminating execution of exe

khan++5-Dec-05 22:44

khan++

5-Dec-05 22:44

TerminateProcess(HANDLE hProcess, UINT uExitCode);
hProcess can be obtained by:
OpenProcess(...);

this is this.

Re: terminating execution of exe

toxcct5-Dec-05 22:44

toxcct

5-Dec-05 22:44

::PostMessage(handle_to_kill, WM_CLOSE);
using WM_QUIT should work too, ,but i don't know the difference between them.

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20]

Re: terminating execution of exe

Cool Ju5-Dec-05 22:57

Cool Ju

5-Dec-05 22:57

Hi,

The WM_QUIT message is not associated with a window and therefore will never be received through a window's window procedure.

The WM_CLOSE message is sent as a signal that a window or an application should terminate.

Do not post the WM_QUIT message using the PostMessage function; use PostQuitMessage.

Bye
Cool Ju Cool | :cool:

Dream Ur Destiny

Re: terminating execution of exe

ThatsAlok5-Dec-05 23:16

ThatsAlok

5-Dec-05 23:16

Cool Ju wrote:
Do not post the WM_QUIT message using the PostMessage function; use PostQuitMessage.

In context on original problem posted by User,Sorry for correcting you.. You cannot use PostQuitMessage to terminate/close other process .

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: terminating execution of exe

Cool Ju5-Dec-05 23:32

Cool Ju

5-Dec-05 23:32

Hi,

I should have posted my comment clearly. Thanks for correcting it.

Bye,
Cool Ju Cool | :cool:

Dream Ur Destiny

Problem with windows 98 and MFC

Arrun5-Dec-05 19:55

Arrun

5-Dec-05 19:55

I did a project in VC++ 6.0 in windows XP but when I run the same exe in windows 98, the default font type and size of the modal dialog box changes. (The font in the caption bar of the main frame and child frame is the default) Wut is the problem? Should i give default font type and size in DoModal() function?

Re: Problem with windows 98 and MFC

sunit55-Dec-05 21:19

sunit5

5-Dec-05 21:19

In Window XP if a Window function has a string argument,it manipulates or handles the string as Unicode (even if the code is not compiled as unicode).This is not in Window 98

Re: Problem with windows 98 and MFC

ThatsAlok5-Dec-05 23:32

ThatsAlok

5-Dec-05 23:32

sunit5 wrote:
In Window XP if a Window function has a string argument,it manipulates or handles the string as Unicode (even if the code is not compiled as unicode).This is not in Window 98

You are right in windows XP, the string args are treated as unicode wheather it unicode or not (internally). But little correction you Sir!.. users problem is not related with UNICODE.

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

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