C / C++ / MFC Discussion Boards

Re: Std::string loadstring???

Aescleal7-Jun-10 21:30

Aescleal

7-Jun-10 21:30

Thanks for that, I'll stick that on the list as the first new thing I've learnt today.

Ash

Re: Std::string loadstring???

Alain Rist8-Jun-10 7:22

Alain Rist

8-Jun-10 7:22

See my answer including Stephen Hewitt contribution at http://www.codeproject.com/Tips/86496/Load-a-Windows-string-resource-into-a-std-string-o.aspx[^]
cheers,
AR

When the wise (person) points at the moon the fool looks at the finger (Chinese proverb)

Re: Std::string loadstring???

gmallax8-Jul-10 1:18

gmallax

8-Jul-10 1:18

Very nice and useful..Thanx Smile | :)

Re: Std::string loadstring???

Alain Rist8-Jul-10 3:42

Alain Rist

8-Jul-10 3:42

gmallax wrote:
Very nice and useful

Then please upvote. Thanks, AR

When the wise (person) points at the moon the fool looks at the finger (Chinese proverb)

Re: Std::string loadstring???

gmallax9-Jul-10 0:42

gmallax

9-Jul-10 0:42

hi,

here we declare char buffer as char buffer[ 1024 ] = { '\0' }..

How to release this?

Re: Std::string loadstring???

Alain Rist9-Jul-10 2:42

Alain Rist

9-Jul-10 2:42

It is released at the next }

ReturnType SomeClass::SomeFunction(SomeParams)
{
    char buffer[1024] = {0}; // this a stack allocation
    // any code ...
    return ReturnType::SomeValue;
} // buffer is deallocated here

cheers,
AR

When the wise (person) points at the moon the fool looks at the finger (Chinese proverb)

fatal error C1001: INTERNAL COMPILER ERROR

archana.srikar7-Jun-10 20:04

archana.srikar

7-Jun-10 20:04

Hi..
can u please help me to solve this error... i'm getting the following error

"fatal error C1001: INTERNAL COMPILER ERROR
(compiler file 'msc1.cpp', line 1786) "

I'm using vc6.0 and in my project settings options - there are no such options like /Og , /Oa .. but still i'm getting the error.

can anyone suggest me some solution asap..

Thanks in advance...
Archana

Re: fatal error C1001: INTERNAL COMPILER ERROR

Niklas L7-Jun-10 20:34

Niklas L

7-Jun-10 20:34

I had a few of those. I think I rearranged some of the code to get it to work. But it was a long time ago. Use #error directive at the top of your source file that fails, move it downwards and see where it breaks. Then, try rearranging your code at that point.

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Re: fatal error C1001: INTERNAL COMPILER ERROR

arun_pk7-Jun-10 20:40

arun_pk

7-Jun-10 20:40

try rebuild/clean the solution once before running

Unable to print micron character µ (mu) in japanese OS

arun_pk7-Jun-10 19:38

arun_pk

7-Jun-10 19:38

I have a vc++ application that has been showing odd characters on Japanese Windows installations.

It shows up an japanese katakana letter O (U + 30AA) instead of the micron character µ (mu)

i am using
sprintf(Buf, "%d µV", Values[i]);

My very simple task is to embed or force the "µ" symbol to remain as-is despite language settings.
Surely there is an easy method that I am missing somewhere!? Does anyone know an answer?

Much appreciation for any help.

Re: Unable to print micron character µ (mu) in japanese OS

GDavy7-Jun-10 21:17

GDavy

7-Jun-10 21:17

Don't use ANSI strings, use UNICODE strings, ANSI strings will use the local Codepage for character conversions wich causes your problem.

Windows message

Pryabu7-Jun-10 19:27

Pryabu

7-Jun-10 19:27

Hi,

What windows message will be send to the application while closing the applcation[End Process] via task manager?

Thanks,

Re: Windows message

Stephen Hewitt7-Jun-10 19:37

Stephen Hewitt

7-Jun-10 19:37

If you use the "End Task" button from the "Applications" tab the WM_CLOSE message is used. If you use the "End Process" button from the "Processes" tab it's closed forcefully and receives no notification.

Steve

Re: Windows message

Cool_Dev7-Jun-10 20:11

Cool_Dev

7-Jun-10 20:11

For "End Task", system sends WM_CLOSE to the app window and wait for a specified time. After the time out if the window is not closed, "Application not responding" message will be shown, and the app is closed forcefully , if you select "End Now".

Visual C++ 6 migrate to Visual Studio 2008

cancerion7-Jun-10 19:21

cancerion

7-Jun-10 19:21

Hi,

I have to work on a project developed in Visual C++ 6 and it need to migrate to Visual Studio 2008.
Can anyone suggest me below things:

- What things one should take care?
- Is there any procedure to do that?

Please provide me as much as information you can provide.

Thanks,
Sachin

Re: Visual C++ 6 migrate to Visual Studio 2008

Randor 7-Jun-10 20:26

Randor

7-Jun-10 20:26

Hi,

Microsoft releases a list of what they call 'Breaking Changes' each time they release a new compiler.

Breaking Changes in Visual C++ .NET 2003[^]
Breaking Changes in the Visual C++ 2005 Compiler[^]
Breaking Changes in Visual C++ 2008[^]
Breaking Changes in Visual C++ 2010[^]

When I am upgrading legacy VC6 applications... I would say that one of the most common problems that I find is within the STL. For example VC6 iterators could be compared to NULL which was non-compliant with the standards. You will now need to compare it to the container.end()

Hmmm I guess another issue I see alot is the forced conformance in for-loop scope. It seems alot of VC6 C++ software engineers would re-use variables outside of the loop scope. You can disable the conformance but I usually take the time to fix it.

Another common issue that I find within MFC projects... is that some of the MFC message handler function signatures have been changed from UINT to LRESULT.

Thats all I can really think of at the moment...

Best Wishes,
-David Delaune

How to send message to the MainFrame from the dll space ?

wangningyu7-Jun-10 18:02

wangningyu

7-Jun-10 18:02

Hello every body !

Now I add some messages in the MainFrame:

1、#define WM_MSG_UPLOAD WM_USER+101

2、afx_msg LRESULT OnUploadMsg(WPARAM wParam,LPARAM lParam);

3、ON_MESSAGE(WM_MSG_UPLOAD,OnUploadMsg)

4、At last, I pose a MessageBox in the "OnUploadMsg" function.

In the Dll:

void MainMsg()
{
  // ::SendMessage((HWND)AfxGetMainWnd(),WM_MSG_UPLOAD,0,0);
  AfxGetMainWnd()->PostMessage(WM_CLOSE, 0, 0);
}

But in the debug mode, AfxGetMainWnd() also is NULL. how can I send the message from the dll space to the MainFrame?

thanks for your reply !

Re: How to send message to the MainFrame from the dll space ?

Cool_Dev7-Jun-10 19:58

Cool_Dev

7-Jun-10 19:58

Are you sure that the window is created before MainMsg() in dll is being called? If not, m_pMainWnd member of theApp will be NULL.

Re: How to send message to the MainFrame from the dll space ?

wangningyu7-Jun-10 20:06

wangningyu

7-Jun-10 20:06

First , thanks for you reply !

Of course,I start the main program first, the m_pMainWnd is impositioned be NULL.

when the MainFrame OnCreate,I load the DLL. and when I click some menu command,it load the dll'function ,so...

I means that how to design the Inform Mechanism, like dll inform to the MainFrame ? Smile | :)

Re: How to send message to the MainFrame from the dll space ?

Cool_Dev7-Jun-10 20:22

Cool_Dev

7-Jun-10 20:22

if no other way, try adding a function such as SetHwnd(HWND hWnd) in dll, to pass window handle. From dll, use this handle to call ::SendMessage(hwnd, .. ..) Big Grin | :-D

Re: How to send message to the MainFrame from the dll space ?

wangningyu7-Jun-10 20:36

wangningyu

7-Jun-10 20:36

I see, thank you very much!

Re: How to send message to the MainFrame from the dll space ?

Aescleal7-Jun-10 21:08

Aescleal

7-Jun-10 21:08

Is your DLL an extension DLL and does it call AfxInitExtensionModule() in DLLMain (or whatever you've called it)?

It sounds like you're building a regular DLL and have created your own CWinApp derived object in the DLL. As the main window isn't created by the DLL m_pMainWindow is zero and AfxGetMainWnd hasn't got a lot to return.

Have a quick gawp at this.[^] It's got some more info about extenstion DLLs.

Cheers,

Ash

Re: How to send message to the MainFrame from the dll space ?

wangningyu7-Jun-10 21:18

wangningyu

7-Jun-10 21:18

It's very useful ,thanks all the same!

BITMAP.bmBits returning NULLS

ForNow7-Jun-10 13:56

ForNow

7-Jun-10 13:56

Hi,

I was trying in vain to do some background coloring for a bitmap I was using a lot of people at the site gave

me valueble help however noting seemed to worked

fustrated I decided to look at the bitmap in core before and after BitBlt

I issued GetBit hoping to look at memory at the before and after value of the BITMAP.bmBits member

but the value returned was nulls before and after each BitBlt call

thanks in advance

Re: BITMAP.bmBits returning NULLS

Niklas L7-Jun-10 20:59

Niklas L

7-Jun-10 20:59

This should work for you:

CDC cdcimage;

cdcimage.CreateCompatibleDC(&cdcwindow);

COLORREF clrFill = RGB(128, 128, 128);

CBrush brush;
brush.CreateSolidBrush(clrFill);

CBrush *pOldBrush = cdcimage.SelectObject(&brush);
CBitmap *oldbit = cdcimage.SelectObject(&m_bitmap);

COLORREF clr = cdcimage.GetPixel(0, 0);

cdcimage.ExtFloodFill(0, 0, clr, FLOODFILLSURFACE);

cdcimage.SelectObject(oldbit);
cdcimage.SelectObject(pOldBrush);

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