C / C++ / MFC

3-Jun-08 1:06

You can use o WM_CTLCOLOR however you can use of WM_PAINT or WM_ERASEBK...

XML stream to send data

CodingLover1-Jun-08 20:19

Re: XML stream to send data

1-Jun-08 20:19

Hi all,

I want to write a xml file to send some data. What I tried is write data to a temporary file, then attach it to a buffer and do the processing.

long CCreateXML::CInitialElements(void)
{
	TCHAR szTempFile[MAX_PATH];
	HRESULT hr;
    CComPtr<istream> pOutFileStream;
	//CComPtr<ixmlwriteroutput> pWriterOutput;
    //CComPtr<ixmlwriter> pWriter;

	if(!::GetTempFileName("C:\\", "rf", 0, szTempFile))
	{
		return -1;
	}

	if(FAILED(hr = SHCreateStreamOnFile(szTempFile, STGM_CREATE | STGM_WRITE, &pOutFileStream)))
	{
		return -1;
	}

	return 0;
}
</ixmlwriter></ixmlwriteroutput></istream>

I got a link error at the beginning and wried it me. Can you guys tell me where I'm going wrong.

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

Mark Salsbery2-Jun-08 6:15

Mark Salsbery

2-Jun-08 6:15

CodingLover wrote:
I got a link error at the beginning

Providing the exact error message would be helpful Smile | :)

I would guess your project needs to link to shlwapi.lib to use
SHCreateStreamOnFile().

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: XML stream to send data

Hamid_RT3-Jun-08 1:05

Problem with PeekMessage MFC application

3-Jun-08 1:05

Does here[^] and here[^] helpful?

Prasanth M V1-Jun-08 19:38

Prasanth M V

1-Jun-08 19:38

In my simple MFC application, there are two controls, one button and multi lien edit box

The event handler of the button will do the parsing of some files(aboutt 100 files) which may take about 10 minutes to complete. And during the parsing time, I want to list the file name which being parsed in the edit box which is being created with ‘multiline’, automatic horizontal and vertical scroll bar options.

It is working well.

I also like to have the option that the user can operate the UI while the parsing is in progress, for that, I added the following code fragment in the file parsing ‘for’ loop in the event handler of button.

MSG msg;
while(::PeekMessage(&msg, NULL, 0,0, PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}

Still every thing is working fine, except that when I click on the vertical scroll button(this scroll bar comes when the items can not be accommodate in the edit box) of the edit box, PeekMessage became in a waiting state and can get the message only after the left mouse button is realese for the scroll bar. During the waiting time of PeekMessage the file parsing is paused. I want to solve this issue such that parsing is performed even when the user operate on the Vertical scroll bar of the edit box.

The event handler of the button look like :

void CMyDlg::OnBnParseFiles()
{
for(int nFileIndex = 0; nFileIndex < 1000; ++nFileIndex)
{

//Perform the parsing on the file with the specified index
PerformFileParsing(nFileIndex);

//Upadate the list of parsed files in the Edit control
UpdateEdit();

MSG msg;
while(::PeekMessage(&msg, NULL, 0,0, PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
}

}

Plese help me if any one any idea
Thanks
Prasanth

Re: Problem with PeekMessage MFC application

Mark Salsbery2-Jun-08 6:20

Mark Salsbery

2-Jun-08 6:20

A better design would be to do your parsing loop in a separate thread.

It sounds like when the scrollbar gets the mouse down message it enters a
modal loop until the button is released, so there's no (easy, anyway) way
to continue your loop on the same thread.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Problem with PeekMessage MFC application

Hamid_RT3-Jun-08 1:04

Deriving class from CObject

3-Jun-08 1:04

I have a question why you dont use of ListBox instead editbox?

subramanyeswari1-Jun-08 18:48

subramanyeswari

1-Jun-08 18:48

Hi,

I have a class which is derived from CObject. Now i want to add print support for this class. Hos is it possible? Is there anyway.

Thanks,

SandipG 1-Jun-08 20:05

SandipG

1-Jun-08 20:05

To Use MFC Printing support i guess your class should be derived from CView.

Regards,
Sandip.

subramanyeswari1-Jun-08 20:15

subramanyeswari

1-Jun-08 20:15

The problem is it is legacy graphic custom control developed in VC++ derived from MFC. Now i have to add print support for this. I am searching in google. but so far i am unlucky. Is there anyway to add print support.

Regards, Eswari

SandipG 1-Jun-08 20:39

SandipG

1-Jun-08 20:39

May be you can add a wrapper/container class to your control which you can derive from CView and add printing support to it.

Regards,
Sandip.

Hamid_RT3-Jun-08 1:04

Working with DWORD variable

3-Jun-08 1:04

Do you want to print your datas ?

Setup with .tlb file?

ritz12341-Jun-08 18:32

ritz1234

1-Jun-08 18:32

Hello dear friends,

I ve an application in which I use the VC6.0.

In the application i have used a C# dll's .tlb file.For creating the

setup for this application what should be done.I am asking about what

should I do to distribute the .tlb file.

Thanks in Advance to all of you.

ritz1234

CodingLover1-Jun-08 18:05

1-Jun-08 18:05

Hi all,

I have a DWORD variable like this,

DWORD value = 0;

After checking a condition, I want to set all bits to 1. If I do this,

DWORD value = 0xffffffff;

is that ok?

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

modified on Monday, June 2, 2008 12:29 AM

Jijo.Raj1-Jun-08 18:30

1-Jun-08 18:30

CodingLover wrote:
After checking a condition, I want to set all bits to 1. If I do this,

DWORD value = 1;

Since DWORD is unsigned long, assigning -1 will do the trick.

DWORD value = -1;

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

CodingLover1-Jun-08 18:34

1-Jun-08 18:34

Actually I put DWORD = 1 by my mistake.

Can you see my edited post.

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

Jijo.Raj1-Jun-08 19:53

1-Jun-08 19:53

There is nothing wrong, but instead of hardcoding, you can use constants such as MAXDWORD which is defined in winnt.h or ULONG_MAX which is defined in limits.h. That will be more safe.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

CodingLover1-Jun-08 20:06

why i could only read one charactor? [modified]

1-Jun-08 20:06

Thanks a lot. Now I got the point. Smile | :)

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

steven_wong1-Jun-08 17:09

steven_wong

1-Jun-08 17:09

hello, everyone:
i am now in trouble with the code below:
char temp[256];
LONG cbData=80;
RegOpenKeyEx(...&hKey);
RegQueryValue(hKey,NULL,(LPTSTR)temp,&cbData);
strcat(temp,"\\abc");
with the last line above , i could only retrieve the first charactor in temp,and the result is just *\abc. I am confused....is there anyone could help me?Thanks in advance~

modified on Monday, June 2, 2008 12:32 AM

Jijo.Raj1-Jun-08 18:01

1-Jun-08 18:01

steven_wong wrote:
strcat(tem,"\\abc");

tem or temp? Just a typo while framing the question or some other temporary variable?

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

steven_wong1-Jun-08 18:32

steven_wong

1-Jun-08 18:32

temp,i am sorry Poke tongue | ;-P

Rajesh R Subramanian1-Jun-08 19:58

Rajesh R Subramanian

1-Jun-08 19:58

MSDN says: RegQueryValue is provided only for compatibility with 16-bit versions of Windows. Applications should use the RegQueryValueEx function.

Besides that, what do you mean by:

LONG cbData = 80? How do you know that this would be enough? RegQueryValueEx returns ERROR_SUCCESS if successful. Did you check the return value of the function?

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

steven_wong1-Jun-08 20:45

steven_wong

1-Jun-08 20:45

thank u for ur replying, Rajesh Wink | ;)

i c that,however, now i need to read the default value of a registry key, which means i could only use RegQueryValue.
and i have checked if RegQueryValue returns ERROR_SUCCESS in my own codes.the codes i paste here is just for simple.anyway, thank u for ur reminding

List box arrow

rp_suman1-Jun-08 16:34

rp_suman

1-Jun-08 16:34

There is a list box in dialog resource.

While running, it is having two arrows on right side vertically.

I want to make it only one arrow towards down and when clicking it I want to show all the items in the list.

How to do it?

Thanks & Regards,
Suman

--
"Programming is an art that fights back!"

Re: List box arrow

Jijo.Raj1-Jun-08 17:56