C / C++ / MFC

Suneet.0321-Jun-07 21:32

Suneet.03

21-Jun-07 21:32

In VC++, you have a Resource file which has all the information regarding what ur dialog will contain , sumthng like this
LTEXT "Click View ",IDC_STATIC,54,73,145,11
PUSHBUTTON "View Information",IDC_VIEW,254,165,56,16

Wat i want is instead of putting "Click View" in this file , can i declare a variable CString str_Data which gets its value from a function

smthng like str_Data = FetchData(LPCTSTR);

so wat i mean is :

LTEXT str_Data, IDC_STATIC,54,73,145,11

zhang80060521-Jun-07 21:12

zhang800605

21-Jun-07 21:12

sorry for my poor English .

It can't use variable directly in Resource file . If you want to do that , you can use a static content which ID isn't IDC_STATIC , and use SetWindowText to contrl the static content that you want to display in the dialog CPP.

LTEXT "Select",IDC_STATIC_NAME,....

...

//dialog cpp
...
GetDlgItem(IDC_STATIC_NAME)->SetWindowText("...");

sps-itsec4621-Jun-07 21:14

sps-itsec46

21-Jun-07 21:14

That's quite easy...

(Step 1) Change the ID of your static control to something other than IDC_STATIC. For example IDC_MY_TEXT.

(Step 2) You can set the text of your static control programatically at any place in your code (e.g. in OnInitDialog()) with the following method:

SetDlgItemText(IDC_MY_TEXT, "Here goes your text!");

The text can surely be a CString instance or the return value of your getData() method.

cheers,
mykel

OMM: "Let us be thankful we have an occupation to fill. Work hard, increase production, prevent accidents and be happy."

Suneet.0321-Jun-07 22:29

Suneet.03

21-Jun-07 22:29

Thanx ....

n wat abt Resource File ... do i have 2 make sum changes in that ....

in LTEXT "",IDC_MY_TEXT,....

Re: How to open message Queue with send and Receive access mode

sps-itsec4622-Jun-07 0:14

sps-itsec46

22-Jun-07 0:14

Sorry... what's your question? Please try to write valid English! OMG | :OMG:

Perhaps you meant something completely different but... you don't have to change your resource file (.rc and/or resource.h) by hand. I guess you're using Visual Studio. Open the dialog that contains the static control, select the static with the mouse and enter the new ID for the static in the properties window. Press return, that's it. Visual Studion changes your resource files (.rc and resource.h).

Now you can use SetDlgItemText() to programmatically change the text of the static (see my previous post).

cheers,
mykel

OMM: "Let us be thankful we have an occupation to fill. Work hard, increase production, prevent accidents and be happy."

SandipG 21-Jun-07 20:49

error coming in class derived from CListVeiw

21-Jun-07 20:49

I dont think you can open MSMQ with send & recv permissions simultaneously. but there are somethers= sharemode permissions you can check in MSDN.

neha.agarwal2721-Jun-07 19:35

neha.agarwal27

21-Jun-07 19:35

Hi all,

i am making a sdi application in which i have made a static splitter control.
i have made 2 views to allocate to parts made by splitter control.i have derived those two classes from CListView and when i m using them in my code like this

BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext) 
{
	if (!m_wndSplit.CreateStatic(this,1,2))
	{
		TRACE(_T("failed to create the splitter"));
		return FALSE;
	}

	if (!m_wndSplit.CreateView(0,0,RUNTIME_CLASS(CLeftList),CSize(225, 500),pContext))
	{
		TRACE(_T("Failed to create view in first pane"));
		return FALSE;
	}

	if (!m_wndSplit.CreateView(0,1,RUNTIME_CLASS(CRightList),CSize(225, 500),pContext))
	{
		TRACE(_T("failed to create view in second pane"));
		return FALSE;
	}

	return TRUE;
}

in my mainframe class it gives an error...
error C2504: 'CListView' : base class undefined
E:\Documents and Settings\Neha\Desktop\testapp\LeftList.cpp(17) : error C2440: 'return' : cannot convert from 'class CLeftList *' to 'class CObject *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
E:\Documents and Settings\Neha\Desktop\testapp\LeftList.cpp(17) : error C2653: 'CListView' : is not a class or namespace name

and many more

what is the problem??

can anybody help me in this....

Thanks in advance

Rajkumar R21-Jun-07 19:58

Rajkumar R

21-Jun-07 19:58

CListView is declared in "afxcview.h", check the whether your stdafx.h included afxcview.h.

neha.agarwal2721-Jun-07 20:06

neha.agarwal27

21-Jun-07 20:06

It was not there not included and my problem is solved
thank you very much....

neha.agarwal2721-Jun-07 20:41

neha.agarwal27

21-Jun-07 20:41

tell me one thing if i derive this class from CFormView and place a Listcontrol from control pane, Size of list control is not same as window and when i slide splitter control ii does not increase or decrease its size. can you tell me how to relate this list control to splitter bar...

How to OR Arrays Without loop

Rajkumar R21-Jun-07 22:33

Rajkumar R

21-Jun-07 22:33

I guess your the list control becomes the child of CFormView. Then if you want to adjust the size of list control, you have to handle the WM_SIZE, ... messages from CFormView and Adjust the list control size using SetWindowPos(). When you move the split bar the CFormView derived class will receive the Size messages.

Best Regards
Raj

SandipG 21-Jun-07 18:40

21-Jun-07 18:40

Is there a way through which i can OR entire contents of array.
or may be some memory function which will or two pointers with the specified size.

Cyrilix21-Jun-07 18:43

Cyrilix

21-Jun-07 18:43

And what exactly is wrong with using a loop for this purpose? I'm not exactly sure what you want to OR, but if you want to perform bitwise operations on the two numeric arrays, looping and storing the data in another array is a perfectly fine way of doing so.

SandipG 21-Jun-07 18:48

21-Jun-07 18:48

Being arrays hugh loop takes 4-5 seconds.
so i want to reduce this time to 2-3 seconds.

Cyrilix21-Jun-07 20:05

Cyrilix

21-Jun-07 20:05

Well, what I don't understand is... looping is a concept, so it's not inherently slow unless your algorithm is crappy. If you have 100 pieces of data, and you want to process them all, you have to create a loop that goes through everyone of them. An array (to my inexperienced self), is quite a simple data structure, basically, an initial value and offsets of size sizeof(type), all contiguous in memory, which should be very fast to access. You only have to loop through all of this data once. You do not have to revisit them. Just something like:

int array_A[100];
int array_B[100];
int array_C[100];

for (int i = 0; i < 100; i++)
{
   array_C[i] = array_A[i] | array_B[i];
}

I don't know if it gets any simpler than that...correct me if I'm wrong.

SandipG 21-Jun-07 20:23

21-Jun-07 20:23

I dont know whether i am looking for is possible or not?
what i want e.g if i have to assign 10000 elelemts in loop will take siginifancatly more time than a memcpy or memmove call. similarly something like memcpy or memmove is there anything that can speed up this or operation.

Mark Salsbery22-Jun-07 6:26

22-Jun-07 6:26

How huge of a loop takes 4-5 seconds??? OMG | :OMG:

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Mark Salsbery22-Jun-07 6:34

Re: copy a file bit -by- bit

22-Jun-07 6:34

Borrowing from Cyrilix's code, here's code ORing two 50MB arrays of integers (200MB total bytes
each).

It takes much less than a second on my machine Smile | :)

int *array_A = new int[52428800];
int *array_B = new int[52428800];
int *array_C = new int[52428800];
for (int i = 0; i < 52428800; i++)
{
   array_C[i] = array_A[i] | array_B[i];
}
delete[] array_A;
delete[] array_B;
delete[] array_C;

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

copy a file bit -by- bit

Manmohan2921-Jun-07 17:15

Manmohan29

21-Jun-07 17:15

Can anyone help me to get answers to my these two questions :

1. How can I copy a file bit -by- bit? And also store that bit temporarily in any variable.
2. How to write a single bit in file? Is this method write.
fstream dfile;
char bit = '1';
dfile<<bit-48;

what does="" the="" above="" code="" writes="" to="" dfile="" a="" byte="" or="" bit.???

codes="" compiled="" in="" borland="" c++="" 3.0="" will="" be="" nice="" for="" me="" cos="" i'm="" using="" that="" as="" my="" compiler

--="" modified="" at="" 12:24="" thursday="" 21st="" june,="" 2007

manmohan="" bishnoi=""

<div="" class="ForumSig">Manmohan Bishnoi

Mark Salsbery21-Jun-07 17:57

How to use GDI+ function Bitmap( Class type, String resource )

21-Jun-07 17:57

The smallest I/O resolution you have is one byte so you'll have to work with 8 bits at a time.

You can use bitwise and shift operators to manipulate bits in a byte.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Chen-XuNuo21-Jun-07 16:43

Chen-XuNuo

21-Jun-07 16:43

Recently I begin to program with GDI+,and I want to contruct a Bitmap object with the function Bitmap( Class type, String resource ),because my bitmap is in resource(is it right to use the function?).But I don't know how to set the parameters "type" and "resource"~ Help~ Confused | :confused:

Re: How to use GDI+ function Bitmap( Class type, String resource )

Sameerkumar Namdeo21-Jun-07 16:59

Sameerkumar Namdeo

21-Jun-07 16:59

Construct CBitmap object to first load the bitmap from resource.
Then use that object to get the handle of bitmap.
Finally ,from that handle you can construct a GDI+ Bitmap object by using
Bitmap::FromHandle() function.

Re: How to use GDI+ function Bitmap( Class type, String resource ) [modified]

Mark Salsbery21-Jun-07 17:56