C / C++ / MFC

27-Jul-05 4:49

how do i get the directory of internet explorer so i can launch a help file in html format using winexec?

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David Crow27-Jul-05 4:51

27-Jul-05 4:51

Halawlaws wrote:
...using winexec?

Use ShellExecute() instead.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Halawlaws27-Jul-05 4:53

27-Jul-05 4:53

DavidCrow wrote:
ShellExecute()

what parameters does it take?

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David Crow27-Jul-05 5:00

27-Jul-05 5:00

Halawlaws wrote:
what parameters does it take?

See here.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Halawlaws27-Jul-05 5:02

27-Jul-05 5:02

can u please write the function with the parameters for a file named C:\help\index.htm?
coz it didnt work

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David Crow27-Jul-05 5:07

27-Jul-05 5:07

Halawlaws wrote:
coz it didnt work

What does your code look like that did not work?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Halawlaws27-Jul-05 5:08

27-Jul-05 5:08

ShellExecute(NULL,"open","C:\\help\\index.htm",NULL,NULL,SW_SHOWDEFAULT);

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David Crow27-Jul-05 5:13

27-Jul-05 5:13

I assume a browser window did not open the specified file. What value did ShellExecute() return?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Halawlaws27-Jul-05 5:17

27-Jul-05 5:17

DavidCrow wrote:
assume a browser window did not open the specified file.

Yes it is true

the value is 2

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Ravi Bhavnani27-Jul-05 5:22

Ravi Bhavnani

27-Jul-05 5:22

Looks like the file may not exist.

/ravi

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David Crow27-Jul-05 5:23

27-Jul-05 5:23

Halawlaws wrote:
the value is 2

Look at the link I provided you earlier. 2 = ERROR_FILE_NOT_FOUND. That should be easy enough to diagnose.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Halawlaws27-Jul-05 5:25

27-Jul-05 5:25

but it does exist i checked 10 times

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David Crow27-Jul-05 5:27

27-Jul-05 5:27

Does it work with other .htm files? If you open Windows Explorer and go to the c:\help folder, does double-clicking on the index.htm file open the browser? Are you sure the extension is .htm and not .html? Have you checked the file association in Windows Explorer to make sure that .htm files have an associated application?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Halawlaws27-Jul-05 5:30

27-Jul-05 5:30

no for the 1st question and yes

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David Crow27-Jul-05 5:36

27-Jul-05 5:36

What you have should work. Given that it does not, something else is amuck with your machine. This is just a grasp but what if you replace the first parameter with a real window handle instead of NULL? This way if the browser needs to report an error, it can.

Windows Explorer might be compensating for something that is missing. Use FindExecutable() to retrieve the name of the .exe that is associated with the .htm file.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Halawlaws27-Jul-05 5:39

27-Jul-05 5:39

Don't worry it worked apparently it turned out that the file path was correct but the file name of my file is index.html and not index.htm.
Thanks for ur help in debugging and sorry for wasting your time
ciao

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David Crow27-Jul-05 5:44

COM PORT Does NOT receives all Data!

27-Jul-05 5:44

I suspected that but you did not indicate it was a problem so I pursued other possibilities.

Halawlaws wrote:
...sorry for wasting your time

If the net result is that you learned something, how has time been wasted?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

tomek1827-Jul-05 4:21

tomek18

27-Jul-05 4:21

Hi...

My program is recieving data at 9600bytes (with standard settings), in chunks. 40 or more characters at a time. When the Data is displayed straight away on the screen, everything is cool.
But when I do simple calculations, it misses a lot of characters, and from 40 I might only recieve 20! and some characters turn to little squares.

I have tried reducing the amount of Data transfered to 5 characters, but even so it misses a few, without any pattern.

Is it possible to build a buffer quick enough to store all the 40 characters, then do the calculations of them.

Please give me some suggestions...

Here's part of my code.

void CChildView::SortData(LPCTSTR pszData)<br />
{<br />
<br />
	//copies pszData into buffer<br />
	TCHAR buffer[10];<br />
	_tcsncpy(buffer, pszData, 10);<br />
	<br />
	//converts UniCodeString to ASCII returns buffer<br />
	char AsciiStr[10];<br />
	WideCharToMultiByte (CP_ACP, 0, buffer, -1, AsciiStr, 10, NULL, NULL);<br />
<br />
	//testing, loop increments AsciiBuffer by 1 and stores AsciiStr in AsciiBuffer<br />
	static char AsciiBuffer[11] = "          ";<br />
	static int nPass=0;	<br />
<br />
	AsciiBuffer[nPass++] = AsciiStr[0];<br />
	<br />
	// when 10 characters are collected <br />
	if (nPass == 10)<br />
	{			<br />
	// saves data to a file, add's to exciting contents.<br />
		ofstream testFile( "test.txt", ios::app );<br />
			testFile << AsciiBuffer << " ";<br />
		testFile.close();<br />
		nPass =0;<br />
	}	<br />
	<br />
	//Displays Data in Window<br />
	DisplayData(pszData);<br />
}//end SortData

Maybe I should store the characters 1st, then convert into Ascii, But how do I convert an Array of Unicode into Ascii?

Thanks heaps!!!

Re: COM PORT Does NOT receives all Data!

Marc Soleda27-Jul-05 5:27

Marc Soleda

27-Jul-05 5:27

it'd be a good thing to make a separate thread dedicated to receive data and putting it into a buffer an another (or the main thread) taking this buffer and treat it.

Marc Soleda.

... she said you are the perfect stranger she said baby let's keep it like this... Tunnel of Love, Dire Straits.

general mfc question: lpszTemplateName

23_44427-Jul-05 4:17

23_444

27-Jul-05 4:17

When creating a dialog you have the option of two constructors

CDialog( LPCTSTR lpszTemplateName, CWnd* pParentWnd = NULL );

CDialog( UINT nIDTemplate, CWnd* pParentWnd = NULL );

All the examples I have ever seen use the latter (UINT nIDTemplate). Just for my own edification
could someone tell me how to use the first constructor. I've never seen an example of this. Where do you find the TemplateName? These must be templates created in your code?

The first constructor parameter LPCTSTR lpszTemplateName appears in quite a few constructors, for example:

CFormView( LPCTSTR lpszTemplateName );

CDialogBar::Create
BOOL Create( CWnd* pParentWnd, LPCTSTR lpszTemplateName, UINT nStyle, UINT nID );

CDialog::Create
BOOL Create( LPCTSTR lpszTemplateName, CWnd* pParentWnd = NULL );

CPropertyPage( LPCTSTR lpszTemplateName, UINT nIDCaption = 0 );
COleDBRecordView( LPCTSTR lpszTemplateName );
CRecordView( LPCSTR lpszTemplateName );

David Crow27-Jul-05 5:05

27-Jul-05 5:05

mx483 wrote:
Just for my own edification
could someone tell me how to use the first constructor. I've never seen an example of this. Where do you find the TemplateName? These must be templates created in your code?

In your dialog's constructor, change the first parameter being sent to CDialog's constructor from IDD to MAKEINTRESOURCE(IDD_DIALOG_TEMPLATE) instead.

* Note that IDD_DIALOG_TEMPLATE is whatever name you have in the dialog's class declaration.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

23_44427-Jul-05 5:17

23_444

27-Jul-05 5:17

Hey thanks David,

I have seen the MAKEINTRESOURCE macro before. It seems kind of redundant doesn't it. Why bother converting to an INT when you could just use the other constructor.

Could you give an example of the IDD_DIALOG_TEMPLATE name? You said it is whatever name you have in the dialog's class declaration.

I'm still scratching my head. Please provide a snippet. Thanks again for the response. Jay

David Crow27-Jul-05 5:31

27-Jul-05 5:31

mx483 wrote:
Why bother converting to an INT

That macro converts to a string not an int.

mx483 wrote:
Could you give an example of the IDD_DIALOG_TEMPLATE name? You said it is whatever name you have in the dialog's class declaration.

Just look in your dialog's .h file for the value assigned to IDD.

mx483 wrote:
Please provide a snippet.

Did you modify the dialog's constructor like I described?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb