Re: Converting int to CString - C / C++ / MFC Discussion Boards

SuperGeek14-Dec-01 5:31

14-Dec-01 5:31

Hello everyone.

My question and current task is kinda simple. All I need to do is to send an email to the network admin from my MFC application that runs 24/7 on the server box. Sometimes, for unknown reason, the server box freezes and the only possible action(if I solve this problem) is to send an "alert" message to the network admins that "box needs to be rebooted ASAP".

I know that there are lots of COM components(like ASP mail) out there that facilitate email protocols. As well, there is a number of socket API's and classes.

Does anyone know which way is the fastest and easiest for MFC app to send a simple email.

Big thanks in advance.

Kirill

Re: Email

Andrew Peace15-Dec-01 4:14

Andrew Peace

15-Dec-01 4:14

Use ShellExecute with the program set to a mailto link protocol; i.e mailto:admin@company&subject="blah" etc... using &body. Not a very full answer but I've got some VC problems at the moment so can't access documentation.

--
Andrew.

switching Media player active-x control to full screen

Kuniva14-Dec-01 5:13

Kuniva

14-Dec-01 5:13

How do i switch the Windows Media Player active-x control to fullscreen if its declared as m_cPlayer?

m_cPlayer.SetDisplaySize(?)

if so, what value?

Thanka

Kuniva

Converting int to CString

Cam14-Dec-01 4:53

Cam

14-Dec-01 4:53

First, a big "thank you" to everyone who has been helping me. I know I've been asking a lot of stupid questions, but once I get this stuff relearned, I think I'll be fine.

So, here's the next stupid question. I've got an integer, and and I want it in a CString. For example:

//Before
int myint = 123;

//After
CString mystring = "123";

The problem is that when I try to assign it directly, it puts the character with the ASCII value of the int into the string (I think). Anyway, then I looked up itoa in MSDN, and found a solution. But you must pass itoa a character array to store the resulting text in. Anyway, the only way I know to make it work is like this:

char cDay[3] = " ";
_itoa(theTime.GetDay(), cDay, 10);
CString Day = cDay;

Anyway, the basic idea is that I changed it from an int to a char array, and then from a char array to a CString. But I'm sure there's a way to leave out the char array and just do it directly. Thanks again.

~Cam Desautels (BinaryUprising.com)

Re: Converting int to CString

Joaquín M López Muñoz14-Dec-01 4:59

Joaquín M López Muñoz

14-Dec-01 4:59

The following snippet of code is useful for writing numeric values into std::strings:

#include <sstream>
template <typename T> inline std::string tostring(const T& t)
{
  std::ostringstream ostr;
  ostr<<t;
  return ostr.str();
}

It must be trivial to adapt it for MFC CStrings.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Converting int to CString

Cam14-Dec-01 5:09

Cam

14-Dec-01 5:09

Ahh...yes, if I'm going to be doing a lot of conversions like that, a template would be a very good idea. But I don't really understand that code...I don't get what the binary shift does...but isn't there a more direct route?

~Cam Desautels (BinaryUprising.com)

Re: Converting int to CString

Alvaro Mendez14-Dec-01 5:16

Alvaro Mendez

14-Dec-01 5:16

Here's the most direct way, short of writing your own little function to do it:

CString Day;
Day.Format(_T("%d"), theTime.GetDay());

Regards,
Alvaro

Re: Converting int to CString

Cam14-Dec-01 5:48

Cam

14-Dec-01 5:48

Ahhh

, thank you.

~Cam Desautels (BinaryUprising.com)

How to Change the 'Caption' of a CPropertyPage

14-Dec-01 3:39

Hi there,

can somebody tell me how to Change 'Capiton' text of a CPropertyPage at Runtime.

this

m_psp.pszTitle = "Test";

or this

SetWindowText("Test");

dosn't work

Thanks

Claus

Re: How to Change the 'Caption' of a CPropertyPage

Joaquín M López Muñoz14-Dec-01 4:23

Joaquín M López Muñoz

14-Dec-01 4:23

Check MSDN article Q141487:How to Change the Text in the Tabs of a CPropertySheet.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Creating Excel files

14-Dec-01 2:21

Hello all!

Anybody knows how to create Excel (BIFF) files without Excel (directly write to file)?

I find source code only in Pascal Frown | :-(

((
Need C++ ...

Help!!! Smile | :)

))

Dmitry.

How do I create a "Virtual" Device Context?

Jon Hulatt14-Dec-01 2:04

Jon Hulatt

14-Dec-01 2:04

Hi,

I'm trying to write a bitmap conversion program that reads the bits of a bitmap file and writes them to another file in my custom format.

Because the user's bitmap might not be the required size, i want to scale it to cater for this eventuality.

The CDC::StretchBlt function is good for this, I've used it before. But how can I use this function, when i have no device contect to work with? I am not displaying the bitmap to the screen at any point.

How can i create memory device contexts from nowhere, that are suitable for my bitmap manipulation needs?

Thanks

Jon

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: How do I create a "Virtual" Device Context?

Joaquín M López Muñoz14-Dec-01 2:11

Joaquín M López Muñoz

14-Dec-01 2:11

::CreateCompatibleDC(NULL) will do, I guess.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: How do I create a "Virtual" Device Context?

Jon Hulatt14-Dec-01 3:18

Jon Hulatt

14-Dec-01 3:18

Thanks for that info. It kind of works, but my stretchblt doesn't!
see:

CDC srcDC,destDC;

srcDC.CreateCompatibleDC(NULL);
destDC.CreateCompatibleDC(&srcDC);
destDC.SetStretchBltMode(COLORONCOLOR);
srcDC.SelectObject(m_Bitmap);
destDC.StretchBlt(0,0,WALLPAPER_SIZE_X,WALLPAPER_SIZE_Y,&srcDC,0,0,bm.bmWidth,bm.bmHeight, SRCCOPY);

int x,y;
for (y=0; y<WALLPAPER_SIZE_Y;y++)
{
    for (x=0;x<WALLPAPER_SIZE_X;x++)
    {
        m_PreviewPane.p_ImgData[ (WALLPAPER_SIZE_X * y) + x ]=destDC.GetPixel(x,y);
    }
}

OK. Let me explain what's happening here. I create a source device contect as you suggested, and a destination dc compatible with it. I select my source bitmap into the source device context (srcDC). I then try to strechblt, to scale the image to be WALLPAPER_SIZE_X by WALLPAPER_SIZE_Y in size. bm is a BITMAP structure, containing the source bitmap information.

Tracing through this in the debugger, everything seems valid. bm.bmWidth * bmHeight contain correct source size info, etc etc. But the stretchblt function returns 0 (which is a failure). GetLastError returns 0 as well, if i try that.

The nested loops at the bottom read the scaled bitmap into a previously allocated array. destDC.GetPixel always returns (COLORREF) 0xFFFFFFFF. if i change that line to use srcDC.GetPixel, It returns the proper data from my bitmap.

Basically, I have no idea why stretchblt is failing, and no ideas of how to trace through the problem.

Any help greatly appreciated.

Thanks

Jon

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: How do I create a "Virtual" Device Context?

Jon Hulatt14-Dec-01 3:31

Jon Hulatt

14-Dec-01 3:31

I fixed this now by using the CBitmapDC class from this site!

http://www.codeproject.com/bitmap/bitmapdc.asp#xx49439xx

Thanks all

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Accessing .MDB files

Cris14-Dec-01 2:02

Cris

14-Dec-01 2:02

Anybody knows if is possible install with VC++ code the MS Jet 3.5 to access MDB files ? How could I make this ?

Thanks,
Cristiano ...

Opening a new IE window

Rob Caldecott14-Dec-01 0:25

Rob Caldecott

14-Dec-01 0:25

I want to open a URL using a NEW IE window rather than any existing one being reused (same as SHIFT+clicking a link in IE). Currently, to open a URL, I simply use ShellExeute, e.g.:

ShellExecute(NULL, NULL, strURL, NULL, NULL, NULL);

However, calling the above twice means you blat the first URL with the second...

Re: Opening a new IE window

Philip Patrick14-Dec-01 14:21

Philip Patrick

14-Dec-01 14:21

First you need to determine what is the default browser on this machine. Check the "HKEY_CLASSES_ROOT\http\shell\open\command" in registry to find out it.
Next use your ShellExecute like this (in case the browser was MS Explorer):

ShellExecute(NULL, NULL, "iexplore.exe", strURL, NULL, NULL);

At least this way I did Smile | :)

Philip Patrick

ActiveX For Connecting Database

San13-Dec-01 23:50

San

13-Dec-01 23:50

Hi All,

I want to Create My own AciveX control which should work as teh usual database ActiveX Control.So Please give me the posssible suggessioon to create such a Component ie, what all are the Functions to be used for creating such an Application

Thanks in Advance

Sangeetha

Who have a example of setting a picture as background in CRichEditView?

white jungle13-Dec-01 23:03

white jungle

13-Dec-01 23:03

Please email to me a copy,Ok?
thank you !

Dummy dialog!

Rickard Andersson²⁰13-Dec-01 22:03

Rickard Andersson²⁰

13-Dec-01 22:03

If you create a edit box and the create a int varible for that. Then compile it and erase everything in the edit box, then a dialog box appears with a message that says "Write an integer" or something like that. But HOW TO GET AWAY FROM IT!! I don't want it!!

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

------------------------------

Re: Dummy dialog!

Eugene Pustovoyt13-Dec-01 23:35

Eugene Pustovoyt

13-Dec-01 23:35

That is a work of the DDV function.
If you don't want have the message, you must fill edit box before close the dialog.

Best regards,
Eugene Pustovoyt
Big Grin | :-D

Sonork ID 100.10002:Yaumen

Re: Dummy dialog!

Nish Nishant13-Dec-01 23:47

Nish Nishant

13-Dec-01 23:47

Override OnOK() and put a zero into the member variable you have associated with the edit box so that DDV wont complain.

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

DLL questions

13-Dec-01 19:51

Is there a way to export an entire class in a .def file? I am working on a Unix-based project and there may be a need to port it to NT. I really want to avoid all the non-portable __declspec(dllexport) and all of those macros.

Also, could someone tell me how the heap manager works for DLLs? I've heard that all memory allocated from one DLL must be freed by that DLL because it may be using a different heap manager... That seems like a major problem if it's true. How do people develop plugin DLLs if that is the case? Do people provide destroy() methods on every object created by the DLL so that it can delete it?

Cheers,
Andy

Re: DLL questions

Nish Nishant13-Dec-01 20:10

Nish Nishant

13-Dec-01 20:10

Hi Andy

I cannot provide you a proper answer but sometimes people create their own heap from their DLLs. Thus those DLLs must delete their private heaps.

Look up HeapDestroy,HeapCreate

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

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