Re: drawing on child windows - C / C++ / MFC Discussion Boards

Re: How to change the Luminosity/Intensity of a Pixel??

Kamyar Souri24-May-04 20:01

24-May-04 20:01

read the iamge processing for dummis in code project about HSL color space;)

Kamyar Souri
Booria CAD/CAM Systems
www.booria.com

Re: How to change the Luminosity/Intensity of a Pixel??

Branislav25-May-04 2:00

Branislav

25-May-04 2:00

Here are one my solution about it. If you wont to get lighter color put white color otherwise black.
white -> RGB(255, 255, 255) // full light
black -> RGB(0, 0, 0) // light off
1) Make function like this:
a) For increase intensity:
int FindMax(int a, int b, int c)
{
if((double)a > (a+b+c)/3) return a;
if((double)b > (a+b+c)/3) return b;
if((double)c > (a+b+c)/3) return c;
if((double)a == (a+b+c)/3) return a; // for same color
return 255;
}
b) For decrease intensity:
int FindMin(int a, int b, int c)
{
if((double)a < (a+b+c)/3) return a;
if((double)b < (a+b+c)/3) return b;
if((double)c < (a+b+c)/3) return c;
if((double)a == (a+b+c)/3) return a;
return 0;
}
2) Make some variable int intensity = 0; // plus or minus

3) In your function put this code:
int dif;
if(intensity < 0)
{
dif = FindMin(myRGB[j][i].R, myRGB[j][i].G, myRGB[j][i].B);
if(dif > -intensity)
dif = intensity;
else
dif = -dif;
}
else
{
dif = FindMax(myRGB[j][i].R, myRGB[j][i].G, myRGB[j][i].B);
dif -= 255;
if(dif > intensity)
dif = intensity;
}
SetPixel(dc, x+j, y+i, RGB(myRGB[j][i].R+dif, myRGB[j][i].G+dif, myRGB[j][i].B+dif));

About Service Pack

Northbird24-May-04 18:40

Northbird

24-May-04 18:40

Hi,All. How to get Windows system Service Pack information using VC++? Thanks!

Re: About Service Pack

SimasT24-May-04 23:10

SimasT

24-May-04 23:10

GetVersionEx()

OSVERSIONINFO structure will contain member szCSDVersion that indicates the latest Service Pack installed on the system.

SimasT.

How to choose Best Adapter ?

.NetRams24-May-04 18:37

.NetRams

24-May-04 18:37

Hi,

I am having more than one Network adapter in my machine, thru MFC Program how could i select the best adapter (highest Bandwidth) to bind?

Thanks in Advance
Rose | [Rose]

Rams

Re: How to choose Best Adapter ?

David Crow25-May-04 2:15

David Crow

25-May-04 2:15

Does GetBestInterface() help? If not, there are other IP Helper functions available that may.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

drawing on child windows

ashxly24-May-04 18:31

ashxly

24-May-04 18:31

I do some drawing on client area of main window, but some controls on main window covered the drawing. I have tried to use non-clipchildren style, but it doesn't work. Does anyone know how to solve the problem?

Thanks

Re: drawing on child windows

Johan Rosengren24-May-04 23:27

Johan Rosengren

24-May-04 23:27

I don't think this is possible in any dependable way. If you want parts of the controls transparent, you might want to investigate SetWindowRgn. Hiding the controls under some circumstances might perhaps be another alternative?

GetTitleBarInfo

TrungHuynh24-May-04 16:51

TrungHuynh

24-May-04 16:51

Hello

I write an application (MFC Dialog), when i call GetTitleBarInfo, the compiler alway error: undeclare identifier

i know this function declare in winuser.h, and i already check,

i use VC6++, SP5, instal Platform SDK

Any one can help me.
Thanks alot

Re: GetTitleBarInfo

Michael Dunn24-May-04 17:56

Michael Dunn

24-May-04 17:56

See the FAQ
2.2 I'm trying to call a Windows API, but the compiler gives an undeclared identifier error (C2065). Why?[^]

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
Laugh it up, fuzzball.

Re: GetTitleBarInfo

*Dreamz24-May-04 18:46

*Dreamz

24-May-04 18:46

#define WINVER 0x0500 (Before including any windows headers)
And i tried this in Win 2000.

STL string case conversion

Indrawati24-May-04 15:52

Indrawati

24-May-04 15:52

Hi Could someone tell me how I can accomplish string case conversion using STL string, something like MakeUpper() and MakeLower() in CString?

Thanks!

Re: STL string case conversion

Christian Graus24-May-04 17:25

Christian Graus

24-May-04 17:25

Use foreach with a funtion that calls toupper on each character in the string.

Christian

I have drunk the cool-aid and found it wan and bitter. - Chris Maunder

Re: STL string case conversion

Andrew Walker24-May-04 22:27

Andrew Walker

24-May-04 22:27

Christian almost had it, but at least under my version of VC (.NET 7.0) toupper isn't passed the parameter by reference so you need to use std::transform

std::string str = "hello world";
std::transform(str.begin(),str.end(),str.begin(),::toupper);

If you can keep you head when all about you
Are losing theirs and blaming it on you;
If you can dream - and not make dreams your master;
If you can think - and not make thoughts you aim;
Yours is the Earth and everything that's in it.

Rudyard Kipling

threads and modeless dialogs

kfaday24-May-04 15:51

kfaday

24-May-04 15:51

Hello..
i've got a problem with threads and modeless dialogs.
With modal dialogs i had no problems. This is a mfc app(VC++6.0), in the main view, i created a button, and when i clicked on it i created a thread (which opened a dialog), then waited for the user to close the dialog, and delete the thread:

<br />
void CHilosView::OnButton1() <br />
{<br />
	<br />
	hilo = new CThread(); <br />
                delete hilo;<br />
}

when i did the new CThread, it would create the dialog, when the user clicked on the cancel button of the dialog, the dialog would close, then it would get to the delete hilo line and it would be ok.

But now with modeless dialogs my function has become:

<br />
void CHilosView::OnButton1() <br />
{<br />
	<br />
	hilo = new CAccionarHilo();<br />
	hilo->dlg->CThread(130);   (dlg is a dialog, 130 it's id)<br />
	hilo->dlg->ShowWindow(1);<br />
	//delete hilo;<br />
}<br />

and i can't delete the thread there, because i would never be able to see the dialog!!.
So i'd love to be able to call the delete from the new dialog (that is created everytime i press button1 in the main window) 'cancel' button.
i can close the dialog, but i never get to delete the hilo (or thread (it's spanish))

I can't call the delete method as :'hilo' : undeclared identifier, and i can't include the hilosView header in the dialog class, because i include the Cthread file in the hilosView class, and it includes the dialog class.

hope you can help me!!
thanks!!

Re: threads and modeless dialogs

David Crow25-May-04 2:20

David Crow

25-May-04 2:20

It's usually not a good idea to put a window/dialog in a secondary thread. You should post a user-defined message back to the main GUI thread to perform this service for you. If you really, really need to have GUI objects operating from a thread, you must not use a worker thread. You must use a user-interface thread, which has a message pump.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Serial Communication Problem

mhar24-May-04 15:36

mhar

24-May-04 15:36

Hi,
I am have a program that uses serial port to transfer data from one machine to another. My program is actually running fine except for the problem that I have an intermittent scrambling of data received from the serial port. The bytes are actually interchanged position. Does anyone of you who knows this kind of problem ? Here is the sample data transmitted from the other machine. "test message" the data received by my program is like this "tets messgae"
then if I repeat it, sometimes the data is correct.
Any help is highly appreciated.!

Thanks,
Mar Cry | :((

Mar Solero Jr.

Re: Serial Communication Problem

Kamyar Souri24-May-04 20:02

Kamyar Souri

24-May-04 20:02

Thats impossible!
I think its a little bug in your code not a bug in serial comm.

Kamyar Souri
Booria CAD/CAM Systems
www.booria.com

size of a compiled exe

locoone24-May-04 15:33

locoone

24-May-04 15:33

i was just wondering how everyone gets there demo's and project's so small i just compiled a very small dialog it has 3 buttons 2 edits 1 combobox and 2 static text and its 2 mb i wanna know how to get it smaller

Re: size of a compiled exe

kfaday24-May-04 15:39

kfaday

24-May-04 15:39

perhaps (in vb6.0)
project -> setting -> use MFC in a shared dll?

Re: size of a compiled exe

temp1@vasr.net24-May-04 16:12

temp1@vasr.net

24-May-04 16:12

Did you compile it in debug mode?

Re: size of a compiled exe

Maxwell Chen24-May-04 17:58

Maxwell Chen

24-May-04 17:58

1) VC++: Release < Debug build.
2) VC++: MFC: Shared Link < Static Link.
3) VC++: Win32 SDK < MFC.
4) Platform SDK Cmd-Prompt Build < VC++.
5) VC++ 7.x < VC++ 6.

Maxwell Chen

Re: size of a compiled exe

Michael Dunn24-May-04 18:01

Michael Dunn

24-May-04 18:01

Not sure if VC 7 has this, but in 6 you can add the /opt:nowin98 linker switch to reduce the binary size further.

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
You cannot stop me with paramecium alone!

Re: size of a compiled exe

Michael Dunn24-May-04 18:00

Michael Dunn

24-May-04 18:00

Your app is 2 MB because you built the debug configuration. Switch to release Smile | :)

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
Pinky, are you pondering what I'm pondering?
I think so Brain, but how will we fit the hamster inside the accordion?

Re: size of a compiled exe

locoone25-May-04 6:42

locoone

25-May-04 6:42

thanks mike that works wonders went from 2 mb to 236 kb Laugh | :laugh:

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.