about modal and modaless dialog when dealing with large data - C / C++ / MFC Discussion Boards

tongc19-Oct-02 4:27

19-Oct-02 4:27

Hi! The following values, which are greater

front = 0x003223d8

front->next = 0x00323118

Thanks, i have not clue which one is greater nor what they means! The only thing i know is that they are virtual address of a process. !!

Another thing is if i take

front->next - front

what does it give me???

Thanks

Re: memory comparison

includeh1019-Oct-02 4:55

includeh10

19-Oct-02 4:55

the numbers are too complicated: if u ask 1 and 3, which is "greater", i know the answer.
front->next - front is really meaningless except u do special research.

don't stick on those kind problems when u start to learn c++, or u will get lost.

includeh10

Re: memory comparison

Nish Nishant19-Oct-02 4:58

Nish Nishant

19-Oct-02 4:58

includeh10 wrote:
the numbers are too complicated

Not really, they are 32 bit addresses, that's all!

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: memory comparison

Nish Nishant19-Oct-02 4:57

Nish Nishant

19-Oct-02 4:57

Looks like you have a linked list and they are all addresses. front is the address to the front of the list prolly, and front->next points to the next node. Subtracting them would give you a meaningless number!

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: memory comparison

Michael Dunn19-Oct-02 8:56

Michael Dunn

19-Oct-02 8:56

Those are hexadecimal numbers, base 16. That is what the 0x prefix means. Each digit can be 0-9 or a-f, where a-f represent decimal 10-15. So 3223d8 is less than 323118.

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Disable the taskbar name of any process

suresh_sathya19-Oct-02 4:26

suresh_sathya

19-Oct-02 4:26

How to disable the taskbar name of any process

Re: Disable the taskbar name of any process

Nish Nishant19-Oct-02 4:53

Nish Nishant

19-Oct-02 4:53

suresh_sathya wrote:
How to disable the taskbar name of any process

Make the following changes in your CWinApp derived class's InitInstance() :-

m_pMainWnd->ShowWindow(SW_HIDE);
m_pMainWnd->ModifyStyleEx(WS_EX_APPWINDOW,WS_EX_TOOLWINDOW);
m_pMainWnd->ShowWindow(SW_SHOW);
m_pMainWnd->UpdateWindow();

The two lines in bold are the newly added lines.

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

about modal and modaless dialog when dealing with large data

whelk19-Oct-02 3:56

whelk

19-Oct-02 3:56

hello:
my question is: we know the modal dialog dont deal with WM_PAINT message
but when i have a button on a modal dialog to deal with a large data,how can
i refesh the dialog?i have used following code:
MSG msg;
if (!::PeekMessage(&msg.NULl,0,PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
in the for loop;but it is useless;who can tell me why? Confused | :confused:

-----------------------------
Mr.Whelk
-----------------------------
Zhuhai City ,Guangdong ,China

Re: about modal and modaless dialog when dealing with large data

Stephane Rodriguez.19-Oct-02 4:02

Stephane Rodriguez.

19-Oct-02 4:02

So you think a modal dialog box doesn't process WM_PAINT messages ? You think wrong.

How low can you go ?
(MS retrofuck)

Re: about modal and modaless dialog when dealing with large data

Nish Nishant19-Oct-02 5:42

Nish Nishant

19-Oct-02 5:42

(1) Your assumption about painting in modal dialogs is wrong. Modal dialogs do receive the WM_PAINT message.

(2) As for your other issue, you can start a worker thread so that your dialog and it's controls (including this particular button of yours) will remain receptive to keyboard and mouse messages.

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

float format

wong190719-Oct-02 3:55

wong1907

19-Oct-02 3:55

hello,
I have the following problem,

float medium(float queueinput)
{
float queueout;
if ((queueinput>60)&&(queueinput<65))
queueout=(0.5/5)*(queueinput-60);
return (queueout);
}

When I execute it, it give me the warning:
"=": conversion from 'double' to 'float', possible loss of data

Does anyone know what's wrong inside it?
THX!!!
Smile | :)

Re: float format

Stephane Rodriguez.19-Oct-02 4:03

Stephane Rodriguez.

19-Oct-02 4:03

Numbers are double, by default. To avoid this warning, you can either disable it (#pragma warning...), or more carefully tell the compiler you are using floats : 0.5 --> 0.5f, 5 --> 5.0f, ...

How low can you go ?
(MS retrofuck)

Re: float format

Nitron19-Oct-02 4:03

Nitron

19-Oct-02 4:03

wong1907 wrote:

queueout=(0.5/5)*(queueinput-60);

(0.5/5) evaluates to a double-precision value, thus when multiplied bu your float, the result is a double. I usually use doubles and forget about float (I do numerical analyses that may be significant out to 20 decimal places or so). If you are set on using the smaller float, try:

float medium(float queueinput)
{
float queueout;
if ((queueinput>60)&&(queueinput<65))
   queueout = static_cast < float > ((0.5/5)*(queueinput-60));
return (queueout);
}

Nitron
_________________________________________--
message sent on 100% recycled electrons.

Re: float format

David Crow3-Oct-06 4:57

David Crow

3-Oct-06 4:57

Any reason why you are using float instead of double?

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using CreateProcess

includeh1019-Oct-02 3:25

includeh10

19-Oct-02 3:25

i need to execute a dos app1, and the dos app1 executes another app2.

i want to hide app1 but not hide app2.
(normally both are visible).

i try CreateProcess function, but if hide app1, app2 is invisible also.

i have a program (no code), the program can do that, so i know it is possible, but i have no idea with the tech.

any hints and guesses will be a help.

thanks in advance

includeh10

Re: using CreateProcess

Nish Nishant19-Oct-02 4:54

Nish Nishant

19-Oct-02 4:54

See if this article helps you :-

http://www.codeproject.com/system/newbiespawn.asp

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: using CreateProcess

includeh1019-Oct-02 5:15

includeh10

19-Oct-02 5:15

thanks, mate,
i will try ShellExecuteEx, hope it works.
my problem is a little bit more complex than this: i need re-direction from the dos app1 also, really headache.

includeh10

An ADOX question

nss19-Oct-02 2:25

nss

19-Oct-02 2:25

I need two things in my C column adding function:

1. Make it so its nullable
2. Dont demand that it be a required field.

All I know right now is:

m_pTable->Columns->Append(lpstrFieldName, (enum DataTypeEnum) Type, nLength);

How can I modify this to get what I want. They are just adding a column with Append. Apparently ADOX has a column property called Nullable, but I;d have to do something like:

ColumnA.Nullable(TRUE);

But I dont know how to get the columnA. What is it that the append can tell me about the way to set the property?

Database Connection using C++

San19-Oct-02 2:02

San

19-Oct-02 2:02

Hi,

Is it possoble to connect any database through c++?
How is it possible.

Thanks in Advance

Re: Database Connection using C++

Giles19-Oct-02 2:38

Giles

19-Oct-02 2:38

No its not possible.

Well really, yes, there are lots of ways. The most popular two are ADO and ODBC.

Now where to begin.

http://www.codeproject.com/database/caaadoclass1.asp[^]

Carlos has put together some great wrappers around ADO which is a COM based method of connecting to databases.

If your new to database programming it may be worthwhile reaing up on what ADO and ODBC are on MSDN.

bitmap

Anonymous19-Oct-02 1:49

Anonymous

19-Oct-02 1:49

CHAR l_buffer[4096];
...
iReturn=recv(ClientSock, l_buffer, 4096, 0);

I receive a bitmap from client but i don't receive the true data.I use this recv function. Is it right?

Re: bitmap

Renjith Ramachandran19-Oct-02 1:58

Renjith Ramachandran

19-Oct-02 1:58

send the bitmap entierly / as u doin the same..
but make sure that all of the data u recvd in ur side

I like the dreams of the future than the history of the past.

Bitmap problem

Renjith Ramachandran19-Oct-02 1:40

Renjith Ramachandran

19-Oct-02 1:40

how can i load a bitmap on a control which automatically changes the color (the rectangle part without the main image)as same as the current dialog color(when i change properties>>appearence tab)..

I like the dreams of the future than the history of the past.

Re: Bitmap problem

includeh1019-Oct-02 3:32

includeh10

19-Oct-02 3:32

first, get COLOR_BTNFACE, then use the color modify your bitmap (from buffer or on dc - best on memory dc).
it is very easy for me.
only hard thing is how to decide the "rectangle"

includeh10

std::vector<CBitmap> fails?!

Anonymous19-Oct-02 0:42

Anonymous

19-Oct-02 0:42

That's strange and I needed a while to find that a CBitmap can't be stored into a vector. What can I do?

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