Re: int value through string - C / C++ / MFC Discussion Boards

David Crow5-Dec-07 2:47

5-Dec-07 2:47

Manish_mnp wrote:
You can not write like this.

You have to write :

string FullPath = "c:\Test\MyProject\G00062_002_01.srf";

You can not write like this.

You have to write :

string FullPath = "c:\\Test\\MyProject\\G00062_002_01.srf";

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

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Re: int value through string

CodingLover5-Dec-07 18:05

CodingLover

5-Dec-07 18:05

Yep you are right. Actually that file path not written on the application. It is find from the application and I've just use it. Smile | :)

I appreciate your help all the time...
Eranga Smile | :)

Re: int value through string

Hamid_RT4-Dec-07 18:59

Hamid_RT

4-Dec-07 18:59

Do you want to convert string values to int?

Re: int value through string

CodingLover4-Dec-07 19:37

CodingLover

4-Dec-07 19:37

Yep, actually my required values are there in a string. I want add those values as int in a Database.

I appreciate your help all the time...
Eranga Smile | :)

Re: int value through string

Hamid_RT4-Dec-07 19:38

Hamid_RT

4-Dec-07 19:38

Did you see functions like atoi and itoa.

Re: int value through string

CodingLover4-Dec-07 20:19

CodingLover

4-Dec-07 20:19

Those are from C right, not C++ functions. Is it better to mix up them. Actually I don't like to do it.

I appreciate your help all the time...
Eranga Smile | :)

Re: int value through string

David Crow5-Dec-07 2:49

David Crow

5-Dec-07 2:49

Eranga Thennakoon wrote:
How should I do this conversion.

Have you considered atoi()?

Re: int value through string

Nelek5-Dec-07 3:43

Nelek

5-Dec-07 3:43

Read above, he doesn't want to mix C with C++ (BTW i don't see where the problem is)

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--------
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If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
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Use of SetWindowsHookEx detectd as spyware

Sudhir Mangla4-Dec-07 18:16

Sudhir Mangla

4-Dec-07 18:16

Hi
I am creating a MAC OS Type dock bar application (Similar to Object dock) on Windows for one of our customer. I need to implement auto hiding feature in dock bar (similar to auto hide feature in windows task bar). As per my knowledge only possible way to implement auto hide is to use SetWindowsHookEx API to create System hook for mouse event.

Now the problem is that I heard that all application that is using SetWindowsHookEx api are detected as spyware by most anti virus and other tools.

Can some one suggest how can I use SetWindowsHookEx safely or any other way to implement auto hide feature in these kinds of applications.

Sudhir Mangla

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Re: Use of SetWindowsHookEx detectd as spyware

Naveen4-Dec-07 20:42

Naveen

4-Dec-07 20:42

Sudhir Mangla wrote:
Now the problem is that I heard that all application that is using SetWindowsHookEx api are detected as spyware by most anti virus and other tools.

I have used the SetWindowsHookEx() in some application. But haven't got the warning from the antivirus yet( tried in norton ).

How ever try putting the SetWindowsHookEx in a dll. I.e create a function in the dll and eport it. inside that function call the SetWindowsHookEx.

nave

[OpenedFileFinder]

why rename would fail sometimes?

kcynic4-Dec-07 15:01

kcynic

4-Dec-07 15:01

Hello everyone.In my program,I want to change a file's content,so I create a create file to copy data from source file and write new data,too.
When all file reading and writing completed,I want to delete the source file and rename the temp file to the source file name.If the source file path is sourcePath,and the temp file path is tempPath,my codes look like following:
if(remove(sourcePath)==0)//sourcePath is the full path of the source file
rename(tempPath,sourcePath);
Of course,the source and temp file are in the same directory.

But it is strange that,if i separate the codes as a short test console project,it works well!
Someones would like to tell me why?
Thanks.

GOOD LUCK

Re: why rename would fail sometimes?

David Crow4-Dec-07 16:51

David Crow

4-Dec-07 16:51

kcynic wrote:
But it is strange that,if i separate the codes as a short test console project,it works well!
Someones would like to tell me why?

If rename() is failing, check errno.

Re: why rename would fail sometimes?

Hamid_RT4-Dec-07 18:16

Hamid_RT

4-Dec-07 18:16

Are you sure path is correct?

Unwanted control characters in a CString

Tom Paronis4-Dec-07 13:36

Tom Paronis

4-Dec-07 13:36

Hello. I'm trying to parse some web data with the following code. It's going reasonably well, but I seem to get control characters (little squares) in the CString, making the parsing more difficult. If they're on the end I can use Trim() to remove them, but if they're in the middle it's more problematic. Since I can't represent them with the keyboard it's difficult to use the Span functions. Does anyone have any suggestions? Thank you.

IHTMLElement* pElem;
hr = pHTMLDocument2->get_body( &pElem );

if ( hr == S_OK && pElem != NULL )
{
pElem->get_innerText(&bstr);
CString strInnerText = bstr;
ScrapeFuturesSettlementData( strInnerText );
}
pHTMLDocument2->Release();
Tom

Re: Unwanted control characters in a CString

David Crow4-Dec-07 16:43

David Crow

4-Dec-07 16:43

Do you know the ASCII value of said "square" characters?

Calling CreateProcessAsUser from service on to Winsta0//winlogon desktop in Vista.

Ronakkumar Patel4-Dec-07 9:18

Ronakkumar Patel

4-Dec-07 9:18

Is this possible to do and how?

I went through this thread and still not able to find out how to do it on Vista

http://forums.microsoft.com/MSDN/ShowPost.aspx?PageIndex=1&SiteID=1&PageID=1&PostID=404082#404082[^]

http://www.uvnc.com/vista/[^]

CImage and VC++ 6

RomTibi4-Dec-07 9:11

RomTibi

4-Dec-07 9:11

How to load a image from a file and show it with a dialog box in VC++ 6? Confused | :confused:

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

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Re: CImage and VC++ 6

David Crow4-Dec-07 10:34

David Crow

4-Dec-07 10:34

If you are using MFC, and your dialog template has a static control on it, check out CStatic::SetBitmap(). Otherwise, if you want the image to be the dialog's background, see here.

modified on Wednesday, December 05, 2007 8:57:09 AM

Re: CImage and VC++ 6

Hamid_RT4-Dec-07 18:20

Hamid_RT

4-Dec-07 18:20

Or you can use of WM_ERASEBKGND.

Adding WM_VSCROLL to message handler for slider control in VS 2005 with C++ and MFC

GrizzlyDoug4-Dec-07 8:04

GrizzlyDoug

4-Dec-07 8:04

In trying to add WM_VSCROLL to message handler for slider control in VS 2005 with C++ and MFC, I ran into problem that the slider only supports 4 NMXXXXXXXXX messages or events. What wizards and tabs/menu selections do I choose to get to a place where I can add the WM_VSCROLL message handler to handle messages for the slider so I can get access to it's current value. This is probably an easy thing to do, but it seems like it has gotten more difficult since access to all the messages has been limited, leaving only a very small subset.

GrizMan

Re: Adding WM_VSCROLL to message handler for slider control in VS 2005 with C++ and MFC

Mark Salsbery4-Dec-07 8:31

Mark Salsbery

4-Dec-07 8:31

The messages are sent to the trackbar control's parent by default.

You could right click the parent window class in the class view window,
choose properties, select the messages tab in the properties window,
and add the WM_VSCROLL handler there.

Mark

Mark Salsbery
Microsoft MVP - Visual C++

Java | [Coffee]

GDI+ samples and malloc/free [modified]

bob169724-Dec-07 7:16

bob16972

4-Dec-07 7:16

In the MSDN source code for some GDI+ methods, the authors use malloc and free. Why would they do this if RectF is a class? Is this a hint that it is merely the equivalent to a struct with the ctor and dtor doing nada? Should we follow this convention or use new/delete instead?

Here's an example for GetRegionScans()...

VOID Example_GetRegionScansRect(HDC hdc)
{
   Graphics graphics(hdc);
   SolidBrush solidBrush(Color(255, 255, 0, 0));
   Pen pen(Color(255, 0, 0, 0));
   GraphicsPath path;
   Matrix matrix;
   Rect* rects = NULL;
   INT count = 0;  

   // Create a region from a path.
   path.AddEllipse(10, 10, 50, 300);
   Region pathRegion(&path);    
   graphics.FillRegion(&solidBrush, &pathRegion);

   // Get the rectangles.
   graphics.GetTransform(&matrix);
   count = pathRegion.GetRegionScansCount(&matrix);
   rects = (Rect*)malloc(count*sizeof(Rect));
   pathRegion.GetRegionScans(&matrix, rects, &count);  

   // Draw the rectangles.
   for(INT j = 0; j < count; ++j)
      graphics.DrawRectangle(&pen, rects[j]);

   free(rects);
}

modified on Tuesday, December 04, 2007 1:45:44 PM

Re: GDI+ samples and malloc/free

David Crow4-Dec-07 7:22

David Crow

4-Dec-07 7:22

bob16972 wrote:
Why would they do this if RectF is a class?

Does its constructor/destructor do anything?

Keep in mind that just because it's an MSDN sample, that does not imply it's also perfect code. Folks that supply samples to MSDN are not infallible. MSDN does provide lots of great code, some of which can be used unaltered, but it should still be scrutinized regardless.

Re: GDI+ samples and malloc/free

bob169724-Dec-07 7:41

bob16972

4-Dec-07 7:41

DavidCrow wrote:
Does its constructor/destructor do anything?

I'm not sure the GDI+ source code is available for inspection (except the declaration files of course)

DavidCrow wrote:
Keep in mind that just because it's an MSDN sample, that does not imply it's also perfect code. Folks that supply samples to MSDN are not infallible. MSDN does provide lots of great code, some of which can be used unaltered, but it should still be scrutinized regardless.

I understand what your saying. I was scrutinizing it and I couldn't determine why they were doing it. I thought I'd post the question to see if it made sense to anybody and if they could explain what benefits the author is realizing here or if the code is flawed.

Thanks for the input.

Re: GDI+ samples and malloc/free

DoomedOne4-Dec-07 9:20

DoomedOne

4-Dec-07 9:20

Hi, I gess is using malloc and free to avoid a loop for alocation a "count" number of Rect objects, alocation all of them in one malloc

look at

malloc(count*sizeof(Rect)<code> parameter of malloc.<br />
<br />
<br />
<br />

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