C / C++ / MFC Discussion Boards

Re: vector math on different pc processors (amd, intel)

Mediate1-Apr-04 23:18

1-Apr-04 23:18

OK, I'll put it like this.

I'm using SIMD instructions, are there some libaries which will convert my high-level code to the proper (processor dependent) low-level machine code, in order to get the fastest vector math possible on every PC processor?

Or do I need to build this in my self, checking which processor and then applying the right optimized vector code for that one?

what about www.optivec.com, could this be where I am looking for?

thanks!

subst programatically

bruno leclerc31-Mar-04 22:30

bruno leclerc

31-Mar-04 22:30

Hi,
Does someone knows how to make a subst programmaticaly in c++ under WNT4 ?
Thanks

Re: subst programatically

David Crow1-Apr-04 3:27

David Crow

1-Apr-04 3:27

I've not ever used the DOS subst command, but are you needing WNetAddConnection(), or maybe WNetUseConnection()?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: subst programatically

bruno leclerc1-Apr-04 21:08

bruno leclerc

1-Apr-04 21:08

I was talking about the subst.exe command.
I had a response : it's the DefineDosDevice(...) function.
Thanks

internet explorer address bar

Anonymous31-Mar-04 20:47

Anonymous

31-Mar-04 20:47

how to detect the change in the address bar of IE from VC++ program.

Re: internet explorer address bar

22491731-Mar-04 23:12

224917

31-Mar-04 23:12

May be BHO can give you more control. For capturing that..

greatest thing is to do wot others think you cant
suhredayan@omniquad.com>

messenger :suhredayan@hotmail.com

Re: internet explorer address bar

Anonymous1-Apr-04 20:27

Anonymous

1-Apr-04 20:27

What is this BHO?

continious monitoring of process

Anonymous31-Mar-04 20:44

Anonymous

31-Mar-04 20:44

how to monitor new generated process from vc++ program

Re: continious monitoring of process

22491731-Mar-04 23:10

224917

31-Mar-04 23:10

does this help Process Class
By Joseph M. Newcomer

greatest thing is to do wot others think you cant
suhredayan@omniquad.com>

messenger :suhredayan@hotmail.com

MFC icon

catngo31-Mar-04 20:30

catngo

31-Mar-04 20:30

how do i set the code so that the .exe file will have the icon instead of the MFC icon?

Re: MFC icon

iceage31-Mar-04 20:42

iceage

31-Mar-04 20:42

go into the "Resource View" tab of your project and change both IDR_MAINFRAME icons to whatever icons you want Smile | :)

Re: MFC icon

catngo31-Mar-04 20:47

catngo

31-Mar-04 20:47

i did that but that only show in the title bar of the program, not on the .exe file that list under windows explorer.

Re: MFC icon

Rick York31-Mar-04 21:39

Rick York

31-Mar-04 21:39

Did you change them both ?

BTW - there is an MSDN article on this subject also.

__________________________________________
a two cent stamp short of going postal.

Re: MFC icon

Anonymous1-Apr-04 1:53

Anonymous

1-Apr-04 1:53

Hi
go to Resource View
Click ICOn
click IDR_MAINFRAME icon
Set the icon say your to both
small (16 * 16)
and Standard(32 * 32)
from the combo box in resource views side view above icon display

Re: MFC icon

catngo1-Apr-04 4:40

catngo

1-Apr-04 4:40

Oh, i see. never know there a combo box there. thank you!

Re: MFC icon

David Crow1-Apr-04 3:29

David Crow

1-Apr-04 3:29

The easiest way is to replace the .ico file(s) in the Res folder.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

hidding splitter windows

fatimah31-Mar-04 18:33

fatimah

31-Mar-04 18:33

hi!

i have created three splitter windows like microsoft outlook in MFC SDI application. The splitter windows are created in OnCreateClient() function of main frame. Now i want to hide and show the left and bottom window on some events dynamically. I have tried to use deleterow() type of functions but it is giving exception. Unsure | :~

kindly tell me what to do? and how to resolve this issue? Confused | :confused:

The code for creating splitter windows is posted below for reference
// CODE

// create vertical splitter<br />
if (!m_wndSplitterV.CreateStatic(this,1,2))<br />
	return FALSE;<br />
if (!m_wndSplitterV.CreateView (0, 0, RUNTIME_CLASS(CLeftView), CSize(150,150), pContext))<br />
	{<br />
	m_wndSplitterV.DestroyWindow();<br />
	return FALSE;<br />
	}<br />
// create horizontal splitter<br />
if (!m_wndSplitterH.CreateStatic(& m_wndSplitterV,2,1,WS_CHILD|WS_VISIBLE|WS_BORDER,m_wndSplitterV.IdFromRowCol(0,1)))		<br />
	{<br />
	m_wndSplitterV.DestroyWindow();<br />
	return FALSE;<br />
	}<br />
<br />
if (!m_wndSplitterH.CreateView(0, 0, RUNTIME_CLASS(CSCR1View), CSize(500,500 ), pContext)|| <br />
		!m_wndSplitterH.CreateView(1, 0, RUNTIME_CLASS(CLowerView), CSize(0, 0), pContext))<br />
	{<br />
	m_wndSplitterV.DestroyWindow();<br />
	return FALSE;<br />
	}

regards
fatima Big Grin | :-D

Re: hidding splitter windows

David Crow1-Apr-04 3:33

David Crow

1-Apr-04 3:33

There's at least one article here at CP that shows how to use CSplitterWnd with changeable views. Unlike other implementations that destroy and recreate the views as necessary, this one basically keeps them in a list of some sort.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Transparent Text to bitmap

Neha31-Mar-04 17:15

Neha

31-Mar-04 17:15

Hi
I want to convert the text into transparent bitmap. How this can be done?

Regards
Neha

Re: Transparent Text to bitmap

John R. Shaw31-Mar-04 21:33

John R. Shaw

31-Mar-04 21:33

The wording of you question needs work, but here is what you need.
SetBkMode(TRANSPARENT); (the text is drawn without drawing background).

If you need to be able to move the text around via draging then you will have to create a compatible bitmap of the appropriate size and draw the text on it then drag the bitmap around on top of whatever bitmap you are placing it on. In which case you will need to use the functions: GetTextExtent (to determine the size of the bitmap to create before drawing to it) and TransparentBlt (NT/Windows 2000) or some other method for drawing doing transparent blits. An example of one way to do transparent blits is in the code provided in CDibData and another in the MSDN library.

Good luck!

INTP

how to store image to SQL SERVER and get from it? (vc6.0,ado)

cococut31-Mar-04 15:54

cococut

31-Mar-04 15:54

I use ado to connect the SQL Server in VC6.0!
what type will I create the image filed in SQL Server?
and how to store the image to database from an image file?
and how to get the image file from the database?

thanks!

Re: how to store image to SQL SERVER and get from it? (vc6.0,ado)

Mike Dimmick31-Mar-04 22:14

Mike Dimmick

31-Mar-04 22:14

Depends how big it is and how big the rest of the row is. If it's small and there won't be much other data in the row, you can get away with a varbinary column. Otherwise, use an image column. The limit on the size of a row in SQL Server 2000 is 8000 bytes.

To write to an image column, you need to use a Parameter on your Command, using the parameter type adLongVarBinary. Set the size of the parameter to the size of your image, and use AppendChunk to set the value of the parameter.

When you get the image data, use a Recordset as normal. You can use the ReadChunk method to get the image data a chunk at a time.

Stability. What an interesting concept. -- Chris Maunder

Re: how to store image to SQL SERVER and get from it? (vc6.0,ado)

cococut1-Apr-04 14:35

cococut

1-Apr-04 14:35

to Mike Dimmick
If I get away with a varbinary column ,
how to write to a varbinary column and read from the column?
thanks!

Returning WCHAR* variable;

Bo Hunter31-Mar-04 15:50

Bo Hunter

31-Mar-04 15:50

I am trying to return a WCHAR* from a function.
The WCHAR* variable will be Marshalled to managed
code with Marshal.PtrToStringUni. If I don't new it
then PtrToStringUni returns the wrong result or nothing.

This does not work.

WCHAR* GetRecorderDriveLetter()
{
    WCHAR drive[4] = {0};
    m_hr = (*this)->GetRecorderDriveLetter(drive, 4);
    //TRACEHR(_T("CCDBurn::GetRecorderDriveLetter"),m_hr);
    return (drive);
}

This does.

WCHAR* GetRecorderDriveLetter()
{
    WCHAR* drive = new WCHAR[4];
    m_hr = (*this)->GetRecorderDriveLetter(drive, 4);
    //TRACEHR(_T("CCDBurn::GetRecorderDriveLetter"),m_hr);
    return (drive);
}

What I am worried about is a memory leak.
How does the memory get freed?

Thank You
Bo Hunter

Re: Returning WCHAR* variable;

Tim Smith31-Mar-04 16:06

Tim Smith

31-Mar-04 16:06

Ok, the reason the first isn't working is because you are returning a pointer to local routine memory. This is memory on the stack. When the routine exits, the memory is removed from the stack and will soon contain other information.

In your second example, memory will need to be freed by the caller.

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

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