C / C++ / MFC

Applying filter Condition in data grid control in MFC VC++

25-Apr-06 0:38

use the CListCtrl member function "Scroll"

Scrolls the content of a list view control.

BOOL Scroll(
   CSize size 
);
Parameters
size 
A CSize object specifying the amount of horizontal and vertical scrolling, in pixels. The y member of size is divided by the height, in pixels, of the list view control's line, and the control is scrolled by the resulting number of lines. 
Return Value
Nonzero if successful; otherwise zero.

also take a look at GetScrollPos to get the scroll position

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

Sriram P.S25-Apr-06 0:30

Sriram P.S

25-Apr-06 0:30

We have developed one project in which we have to sort out the fields based on filter condition. The project should be similiar to the one we have in the excel sheet. The first Row in data grid control will be static and we cannot edit anything in that. It actually has the column names from the database. But the filter condition has to be placed there. A dropdown box should appear when we click that column name and the unique values residing under that column has to be displayed. The rows in the grid has to be refreshed according to the filter condition we applied.
please let me know the ways in which it can be implemented. please give me the source code if possible.

how i can capture the registry key name

kiranin24-Apr-06 23:55

kiranin

24-Apr-06 23:55

by using RegNotifyChangeKeyValue() ,we can notify the changes,then how i can capture the changed key name ,value,status i used RegQueryValueEx(),
i got some garbage value like iiiiiiiiiiiiiiiiii.
Any one give idea about how to capture the name after identifying the notification.

Thanks
Kiran.V

Re: how i can capture the registry key name

YaronNir25-Apr-06 0:03

Re: how i can capture the registry key name

25-Apr-06 0:03

show the code you are using to capture the change of a key name, and we will see why you get a garbage....

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

kiranin25-Apr-06 0:18

kiranin

25-Apr-06 0:18

Hi Yaron,

I want to monitor the changes in the registry,By selecting on of the Root key then monitor the changes in that inlcude key,subkeys.....for name,value and status.
i Add the code in the thread function for monitoring as belowvoid

MonitorThread(void* pParam)<br />
{<br />
    //here am not understanding what event it returns<br />
//	RegNotifyChangeKeyValue(hKey1,TRUE,REG_NOTIFY_CHANGE_NAME|<br />
		//	REG_NOTIFY_CHANGE_ATTRIBUTES|REG_NOTIFY_CHANGE_LAST_SET,hEvent1,TRUE);<br />
	DWORD  dwFilter = REG_NOTIFY_CHANGE_LAST_SET, dwType, dwSize ;<br />
    char lpszUser[81];<br />
    HANDLE hEvent;<br />
	HKEY   hKey;<br />
	LONG   lErrorCode;<br />
<br />
	while(1) 	{<br />
		m_Sec.Lock();<br />
		//memset(lpszUser,0,81);<br />
		dwSize = 81;<br />
		dwType = REG_SZ;<br />
<br />
	// Open a key. Change second parameter to fit your needs.<br />
		lErrorCode = RegOpenKeyEx(hKey, NULL, 0,<br />
                                       KEY_NOTIFY | KEY_READ, &hKey);<br />
<br />
		// Create an event.<br />
		hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);<br />
<br />
		// Watch the registry key for a change of value.<br />
		lErrorCode = RegNotifyChangeKeyValue(hKey, TRUE, dwFilter, hEvent,TRUE);<br />
<br />
		// Wait for an event to occur.<br />
		WaitForSingleObject(hEvent, INFINITE);<br />
<br />
		lErrorCode = RegQueryValueEx(hKey,NULL,0,&dwType,(unsigned char*)lpszUser,&dwSize);<br />
		//Add code for reading from the registry key<br />
				<br />
		int item=pList->InsertItem(pList->GetItemCount(),lpszUser);<br />
		// Close the key.<br />
		lErrorCode = RegCloseKey(hKey);<br />
<br />
		m_Sec.Lock();<br />
		// Close the handle.<br />
		CloseHandle(hEvent);<br />
	//	if(m_cStop1==TRUE)<br />
		//	exit(0);<br />
		//Sleep(1); 	<br />
	}<br />
<br />
<br />
	<br />
}

For reading root key i put one combo box in the dialog and selecting one root key by pressing start button starts the monitoring ,if any changes occurs in the that rootkey registry display that key name,value ans status(create/modify/delete).
by pressing stop button stops the monitoring

Thanks,
Kiran.V

physical memory based

aaaan24-Apr-06 23:40

aaaan

24-Apr-06 23:40

I want to defrag and optimize RAM.so that the unreleased memory
will be released.can anyone help me to write the program.

Thanks

nirmal

Re: physical memory based

Nick_Kisialiou25-Apr-06 8:48

Nick_Kisialiou

25-Apr-06 8:48

I am not sure what you mean by that but if you are talking about physical memory management then look into Address Windowing Extensions provided in Win API. It lets you lock in some pages in physical memory, for example, when you do OS-level optimization of your algorithms working with reasonably large data sets.

Resolution of a bitmap in a .bmp file

aasstt24-Apr-06 23:34

24-Apr-06 23:34

How to improve the resolution of a bitmap in a .bmp file. When I print the bitmap, its resolution is not good.
Can anyone suggest me some code to improve its resolution???

aasstt

YaronNir25-Apr-06 0:01

25-Apr-06 0:01

The only reason i can think of that your bitmap resolution is not good, is because you strech it even not intently.

make sure when you blit the bitmap, that the cx and cy are correct (meaning you got them right using the GetBitmapDimentions method)....

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

aasstt25-Apr-06 0:17

25-Apr-06 0:17

I have created a compatible DC of the printer DC and then I have Converted DDB to DIB. Then I have written this DIB in a .bmp file. but when I open this file in Paint & give its print its resolution is not good.

aasstt

Hamid_RT25-Apr-06 0:18

25-Apr-06 0:18

Can you be more specific.

aasstt25-Apr-06 0:23

25-Apr-06 0:23

I have created a compatible DC(MemDC) of the printer DC.
Then MemDC->SelectObject(bitmap)
Then whatever I draw on the screen is drawn in memory.
and then I have Converted this bitmap from DDB to DIB.
Then I have written this DIB in a .bmp file. but when I open this file in Paint & give its print its resolution is not good i.e it is not appearing as a smooth image but an image with steps in it.

aasstt

Hamid_RT25-Apr-06 0:36

25-Apr-06 0:36

aasstt,
I dont know your code but I use handle printer dc and I created bitmap
or I load bitmap from file and then print and resolution isnt bad.
Now you have bitmap from file or you created bitmap inside your program

aasstt25-Apr-06 1:18

25-Apr-06 1:18

I have created the bitmap and then written that bitmap using the WriteDIB function(which I have downloaded from codeproject)in a .bmp file.

aasstt

Hamid_RT25-Apr-06 2:08

25-Apr-06 2:08

if you have bitmap(that you created) why you directly print instead save to file and again loaded?if it has handle HBITMAP

bitmap

srija24-Apr-06 23:20

srija

24-Apr-06 23:20

How to output a two dimensional array of datatype int array[x][y]in a Listbox control?

voorugonda prashanth24-Apr-06 23:30

voorugonda prashanth

24-Apr-06 23:30

may i know what u r trying to do actually?

how u need the output???

Regards,
Prashanth.v

srija24-Apr-06 23:49

srija

24-Apr-06 23:49

I would like to access each and every element in this array[100][100], in either list box or Edit box...but i couldnt get any result, my programm is gettign hanged,, plz help me
For eg:
int array[100][100];
CListbox m_intoutput;CEdit m_intoutput;
for(int i=0;i<100;i++)
for(int j=0;j<100;j++)
{
m_intoutput=array[100][100];
}

voorugonda prashanth25-Apr-06 0:02

voorugonda prashanth

25-Apr-06 0:02

hii srija,

int array[100][100];
CListbox m_intoutput;CEdit m_intoutput;
for(int i=0;i<100;i++)
for(int j=0;j<100;j++)
{
CString str;
str.Format("%d",array[i][j]);
m_intoutput.Addstring(str);
}

Regards,
Prashanth.v

srija25-Apr-06 2:45

srija

25-Apr-06 2:45

Ya, even i did so, but am getting junk values as output, for eg:-85899
-85899
-85899
-85899................
Waht could be the reason?

Hamid_RT25-Apr-06 0:18

Command line arguments for my MFC app…

25-Apr-06 0:18

what so you want ecatly?
what is this?
m_intoutput=array[100][100];??

anderslundsgard24-Apr-06 23:13

anderslundsgard

24-Apr-06 23:13

How do I get the command line arguments When I start my MFC EXE Application?
Can I find them somewhere from the CWinApp class…?

_____________________________

...and justice for all

APe

Re: Command line arguments for my MFC app…

YaronNir24-Apr-06 23:15