Re: How to limit size of edit box - C / C++ / MFC Discussion Boards

Re: LNK2005 Error: basic_string already defined

SkysTheLimit29-Apr-09 10:28

SkysTheLimit

29-Apr-09 10:28

My program compiles and links successfully now Laugh | :laugh:

I used dynamic linking to lib4. I then needed to remove the NODEFAULTLIB:"libcpmt.lib and NODEFAULTLIB:"libc.lib" from my application link options. (I still needed to have NODEFAULTLIB:"libcmt.lib")

Thank you for your help!

Re: LNK2005 Error: basic_string already defined

Stuart Dootson29-Apr-09 10:40

Stuart Dootson

29-Apr-09 10:40

WendyS56 wrote:
My program compiles and links successfully now

Excellent! That wasn't so difficult now, was it Unsure | :~

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

GetScreenResolution

p_196028-Apr-09 4:22

p_1960

28-Apr-09 4:22

Hi,
May i know how can i get the screen resolution of the system and display a msgbox if the resolution is less than 1152*864....

Re: GetScreenResolution

led mike28-Apr-09 4:31

led mike

28-Apr-09 4:31

GetSystemMetrics[^]

what's the average cpu tick counts for a CView's WM_PAINT handler?

flyingxu28-Apr-09 4:17

flyingxu

28-Apr-09 4:17

I'm going to add more code into WM_PAINT hander, but I'm afraid to add to much to recude the performace.

I need a benchmark value to test if too much cpu tick is spended. Anybody has a value to share?

I know it depends on the different situation, but,.. I still like to see a estimated value. Confused | :confused:

Re: what's the average cpu tick counts for a CView's WM_PAINT handler?

led mike28-Apr-09 4:28

led mike

28-Apr-09 4:28

Use Double Buffering[^]

How to limit size of edit box

amitovoip28-Apr-09 3:55

amitovoip

28-Apr-09 3:55

Hi guys.

I have a fix for a edit box
I have a edit box (dialog box) which take string input ..........
The input at edit has a long limit i want to have finite entries in the edit box say string with 5 chars or number with 5 digits where i set the scope of the input string

Re: How to limit size of edit box

David Crow28-Apr-09 4:34

David Crow

28-Apr-09 4:34

How about sending it a EM_LIMITTEXT message?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

SQL & c++

komofilms7728-Apr-09 2:57

komofilms77

28-Apr-09 2:57

Hello Guys

Can anyone help me with "INSERT INTO" statement...
I need to insert variables into table(MSSQL) and my app. is in c++.

INSERT INTO TABLE_NAME (Col1,Col2,Col3)VALUES ('var1','58.5','15')

This is ok for constants but i cant made it work if i want to insert variables instead constants...

int var1;
int var2;
int var3;

INSERT INTO TABLE_NAME (Col1,Col2,Col3)VALUES (var1,var2,var3) ...?????

any ideas?
tahnks in advance, Komo

Sigh | :sigh:

Re: SQL & c++

David Crow28-Apr-09 3:06

David Crow

28-Apr-09 3:06

komofilms77 wrote:
This is ok for constants but i cant made it work if i want to insert variables instead constants...

Can't you use string, sprintf(), or CString?

Maybe an example can help?

gerens28-Apr-09 3:29

gerens

28-Apr-09 3:29

Hope, the example below can help

graph::addvalue(int nummer, CString typ, CString kstartrnummer,int zeile, int spalte, CString betrag, CString text, int r, int g, int b)
{
	CString abfrage;
	char strbetrag[100];
	CString cnummer, czeile, cspalte, cr, cg, cb;

	sprintf(strbetrag, "%i\0", nummer);
	cnummer = strbetrag;
	sprintf(strbetrag, "%i\0", zeile);
	czeile = strbetrag;
	sprintf(strbetrag, "%i\0", spalte);
	cspalte = strbetrag;
	sprintf(strbetrag, "%i\0", r);
	cr = strbetrag;
	sprintf(strbetrag, "%i\0", g);
	cg = strbetrag;
	sprintf(strbetrag, "%i\0", b);
	cb = strbetrag;
	text.Replace("'", "''");

	abfrage = "INSERT INTO Graph (Nummer, Typ, Kstartrnummer, Zeile, Spalte, Text, Betrag, r, g, b) VALUES (" ;
	abfrage = abfrage + cnummer + ", '" + typ + "', " + kstartrnummer + ", " +  czeile;
	abfrage = abfrage + ", " + cspalte + ", '" + text + "', ";
	abfrage = abfrage + betrag + ", " + cr + ", " + cg + ", " + cb +")";
	db.ExecuteSQL(abfrage);
}

Good luck, Gérard

Re: Maybe an example can help?

komofilms7728-Apr-09 19:41

komofilms77

28-Apr-09 19:41

i made it with sprintf and works great thanks guys Smile | :)

correct way to copy bstr ?

Mogaambo28-Apr-09 1:44

Mogaambo

28-Apr-09 1:44

BSTR strLoggedInUser=GetLoggedInUser();//is this line of code is correct or i use wcscpy here.

BSTR value=::SysAllocStringLen(L"",::SysStringLen(strLoggedInUser));
wcscpy(value,strLoggedInUser);
::SysFreeString(strLoggedInUser);

///////////////////////////////////////////////////////////////////////

HRESULT hr = pclsObj->Get(L"Manufacturer", 0, &vtProp, 0, 0);

BSTR strItemName =vtProp.vt==VT_NULL?L"-NA-":vtProp.bstrVal;// here too is this line of code is correct or i use wcscpy here.

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: correct way to copy bstr ?

_AnsHUMAN_ 28-Apr-09 1:55

_AnsHUMAN_

28-Apr-09 1:55

BSTR value=::SysAllocString(strLoggedInUser);

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: correct way to copy bstr ?

Garth J Lancaster28-Apr-09 1:58

Garth J Lancaster

28-Apr-09 1:58

let me suggest something for you ...

http://lmgtfy.com/?q=copy+bstr[^]

Re: correct way to copy bstr ?

Mogaambo28-Apr-09 2:09

Mogaambo

28-Apr-09 2:09

i know how to copy bstr, but my problem is that when i assign

BSTR b=L"hello";

some where in code the value of b changes to " some garbage value".

but if i use wcscpy, the value of b doesn't change.

please read my question and answer me.

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: correct way to copy bstr ?

tolw28-Apr-09 2:29

tolw

28-Apr-09 2:29

Take a look at: http://msdn.microsoft.com/en-us/library/ms221069.aspx[^]

It is clearly stated that asigning anything to a BSTR should be done using SysAllocString. So using wcscpy or a regular asignment operator (=) is wrong by definition.

You can try something like this (I assume GetLoggedInUser() returns a wchar *):

BSTR strLoggedInUser = ::SysAllocStringLen( GetLoggedInUser() );

//..do something..

//Call this when you are sure the BSTR is no longer used!!
::SysFreeString(strLoggedInUser);

Re: correct way to copy bstr ?

CPallini28-Apr-09 3:11

CPallini

28-Apr-09 3:11

Mogaambo wrote:
BSTR b=L"hello";

That is bad.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: correct way to copy bstr ?

Mogaambo28-Apr-09 3:51

Mogaambo

28-Apr-09 3:51

BSTR b=SysAllocString(L"hello");

BSTR c=b;// here wcscpy should be used or it will work

“You will never be a leader unless you first learn to follow and be led.”
–Tiorio

"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford

Re: correct way to copy bstr ?

CPallini28-Apr-09 5:16

CPallini

28-Apr-09 5:16

Mogaambo wrote:
BSTR b=SysAllocString(L"hello");

The above is fine.

Mogaambo wrote:
BSTR c=b;// here wcscpy should be used or it will work

The above is bad.

Use, instead

BSTR c = SysAllocString(b);

Please read [^].
Smile | :)

Need To create a plugin for adob photoshop.

bankey101028-Apr-09 1:28

bankey1010

28-Apr-09 1:28

Hi All,

I need to create a plugin for adob photoshop. can any give me some idea from where i can get some example sorce code or can i found SDK to develop plugin with VC++.

please share your knowledge.

thanks
Bankey Khandelwal

Re: Need To create a plugin for adob photoshop.

_AnsHUMAN_ 28-Apr-09 1:50

_AnsHUMAN_

28-Apr-09 1:50

See here[^] for downloading the SDK.

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

firing a http url in c

Kiran Pinjala28-Apr-09 0:35

Kiran Pinjala

28-Apr-09 0:35

Hi,
I need to write an application in c on linux, which has to fire a http url. Can you guide me?
Is there any wrapper class like CHttpConnection(MFC) which can be used in linux.

Thank you

Saadhinchaali

Re: firing a http url in c

Rajkumar R28-Apr-09 1:26

Rajkumar R

28-Apr-09 1:26

[libcurl has HTTP support along several other protocols^] BTW, here is [linux forum^]

SetScrollInfo() not calling OnSize() of CDialog

Member 438103628-Apr-09 0:32

Member 4381036

28-Apr-09 0:32

Hai all,

In CDialog,zooming the image and scrolling works fine for dialog but not picture control(CStatic)of CDialog.
I am trying to load an image(any type) in picture control and zooming it.For that i am using the third party class where in contructor i am assigning picture control window.It displays the image and enable the scrollbar according to zoom.

Passing this->m_hWnd of CDialog inside my Zoomin()

SetScrollInfo(this->m_hWnd ,SB_HORZ,&m_HSInfo,TRUE)

This code is calling OnSize() of CDialog and diaplays image in dialog where i can access scrollbar,but if i pass my picture control window inside the

SetScrollInfo(hWndpicturecontrol,SB_HORZ,&m_HSInfo,TRUE)

it is not caling OnSize() of CDialog and i cant even access the thumb of the scrollbar.

I followed the sample by refering the below URL
http://www.codeproject.com/KB/cpp/GDI_.aspx

Thanks and regards
SatheeshKumar.

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