C / C++ / MFC Discussion Boards

OS development for Vietnam [modified]

tuan111113-Jul-09 18:39

tuan1111

13-Jul-09 18:39

true
I want to write OS.
If I haven't MS-DOS then not use "int 21h" Confused | :confused:

U have code:MS-DOS with TASM,Turbo C 3.0 Confused | :confused:

-----------------------------------------------
Confused | :confused:

TASM is free download
VC6,gcc free
what is gcc ?It is DJGPP & 32 bit compiler.Link download Sigh | :sigh:

.
If I write 16 bit boot with TASM...how to mixing TASM with turbo C 3.0,gcc(32 bit kernel) ?

I want to:
in kernel.asm,mixing TASM with gcc|TC (32 bit)
in ker_mix.c,I write:
//descsript:create print Day Function
char input;
void main(){
cout << Action << endl;
cin >> input;
if(input=='Day'){
;print now date,month,time
}
then mix .c(32 bit) with kernel.asm
How to do it
-----------------------------------------------------
End,I have VGA-screen: 16M memory.
It view *.mp4,bitmap file(> 256 color) & run screensaver 3d.All color normal...beatiful
But I write VGA_Bitmap.c with TC 3.0 then result display bitmap bad
why ?
sReason:menory 16M or........
who edit VGA_bitmap.c->Result:beautiful color,normal
THANKS

vietnam

BY:TUAN1111-- Big Grin | :-D

modified on Monday, July 27, 2009 10:48 PM

Re: run programme when run PC

Michael Schubert13-Jul-09 21:48

Michael Schubert

13-Jul-09 21:48

tuan1111 wrote:
running on empty Operating System

tuan1111 wrote:
display text "hello" to the stars

I see that your English has improved a lot since the last time you posted. You have added a nice poetic and philosophical touch to your gibberish.

However, I still suggest that you learn some more English or post on a forum that supports your native language.

Re: run programme when run PC

CPallini13-Jul-09 23:33

CPallini

13-Jul-09 23:33

Michael Schubert wrote:
see that your English has improved a lot since the last time you posted. You have added a nice poetic and philosophical touch to your gibberish.

Please don't be sarcastic! [^] Mad | :mad:

(I really feel unhappy with the last Chris prescription).

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: run programme when run PC

Michael Schubert14-Jul-09 0:45

Michael Schubert

14-Jul-09 0:45

Damn, and I tought I read the guidelines carefully. So, sarcasm is also forbidden...

Ah well, I was having way too much fun here anyway.
(Oh crap, I did it again).

Re: run programme when run PC

CPallini14-Jul-09 0:47

CPallini

14-Jul-09 0:47

Re: run programme when run PC

Caslen14-Jul-09 2:09

Caslen

14-Jul-09 2:09

Michael Schubert wrote:
So, sarcasm is also forbidden

Unless it's funny - which in your case it isn't.

Re: run programme when run PC

David Crow14-Jul-09 9:10

David Crow

14-Jul-09 9:10

tuan1111 wrote:
how to compile & writing boot to CD disk?

A CD is made bootable by the presence of an autorun.inf file. Somehow I doubt that's the answer you were looking for, but since I can't comprehend your post...

"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

Turbo C 3.0 & kernel VGA

tuan111113-Jul-09 17:13

tuan1111

13-Jul-09 17:13

HI!
Vietnam
I have turbo C 3.0.
how to:write VGA into kernel ?
compile kernel with TC 3.0 ?
change code Borland C 3.0 to turbo C 3.0 ?
VGA display 24 bit-bitmap 32 bit ? Laugh | :laugh:

By:tuan1111

Re: Turbo C 3.0 & kernel VGA

David Crow14-Jul-09 9:08

David Crow

14-Jul-09 9:08

tuan1111 wrote:
Vietnam

Your profile indicates you are from the United States. So which is it?

How to handle drawing into bitmaps and PAINT issues

dhomas13-Jul-09 16:05

dhomas

13-Jul-09 16:05

I've created an application that loads a bitmap, and draws on it using various graphics functions (text, bitmap, etc) depending on various things that the user does (pressing keys, clicking buttons, etc). I was able to implement most everything I wanted to do, but there are problems related to not having used OnPaint, so when other windows cover my window, as expected the graphics I drew disappear. I understand the reason this happens, but I'm not quite sure what the simple work around is.

I can't do all my drawing in OnPaint, because well that would be weird. Smile | :)

I've started with a standard MFC Dialog App with a CStatic control. Here's fake code basics of what I have in OnInit():

CBitmap bmpIntro;
bmpIntro.LoadBitmap(IDB_Intro);

CStatic c_Image;
c_Image.SetBitmap(bmpIntro);

Now, problem #1 is that I want to put some intro text on this bitmap to appear when the window first opens. Putting it in OnInit() or OnPaint() doesn't seem to work.

The other problem is that as things progress, I'm using c_Image.GetDC() to draw all kinds of stuff into the CStatic control, and at any given moment, anything could be displayed depending on what the user initiated. Too much for OnPaint() to know what to recreate.

Since the CStatic already knows how to OnPaint() the original bitmap back into the dialog, is there a way I can draw into the original bitmap, so I don't have to worry about OnPaint() myself? And then somehow tell the CStatic to update itself? Or possibly I draw everything twice, once into the CStatic, and once into the original bitmap it is using.

Again, this seems kludgy, surely there's a more sensible way? And then how also to resolve problem #1?

modified on Monday, July 13, 2009 10:43 PM

Re: How to handle drawing into bitmaps and PAINT issues

«_Superman_»13-Jul-09 16:57

«_Superman_»

13-Jul-09 16:57

dhomas wrote:
I can't do all my drawing in OnPaint, because well that would be weird.

It is not weird for Windows.

If all your drawing is in the CStatic control, derive your own class class from CStatic, override its OnPaint method and do your drawing there.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: How to handle drawing into bitmaps and PAINT issues

dhomas13-Jul-09 17:03

dhomas

13-Jul-09 17:03

That would be very complex, since OnPaint() wil have no idea what it has to draw as I explained already.

Re: How to handle drawing into bitmaps and PAINT issues

«_Superman_»13-Jul-09 17:07

«_Superman_»

13-Jul-09 17:07

In this scenario what would be appropriate is to set a variable to different values depending on user actions.
And in the OnPaint you could have a switch statement.

switch (action)
{
   case 1:
      // Draw some text
      break;

   case 2:
      // Draw another bitmap
      break;
   .
   .
   .
}

Whenever the user initiates an action -

action = 1;
static.Invalidate();

«_Superman_»
I love work. It gives me something to do between weekends.

Re: How to handle drawing into bitmaps and PAINT issues

dhomas13-Jul-09 17:14

dhomas

13-Jul-09 17:14

And how does that resolve repainting when another window overlaps this application. It still has no idea what to draw. Keeping a list of all the actions is simply not sensible. The simple approach seems to somehow be in drawing into the original bitmap, and copying from that back into the control when repainting is needed. But, I can't figure out how to do that. And can't find any other approach.

Re: How to handle drawing into bitmaps and PAINT issues

«_Superman_»13-Jul-09 17:27

«_Superman_»

13-Jul-09 17:27

I don't understand your exact requirement, but how would you do a reverse of a particular user action if you draw into the original bitmap.

Let us say the user clicked a check box and you want to display the text "Image checked" on the bitmap.
Now you want to remove the text if the user unchecks the checkbox.

If you do not have such a situation where an action will be undone, you could draw onto the original bitmap.

To modify the bitmap, I guess you just need to create a CDC object and use CDC::SelectObject to select the CBitmap object into it. Now you could use the drawing function of the CDC class to draw on the bitmap.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: How to handle drawing into bitmaps and PAINT issues

dhomas13-Jul-09 17:52

dhomas

13-Jul-09 17:52

I don't need to reverse any actions. Okay here's an analogy...

You have a black chalkboard. It's got nothing on it. A bunch of people go up to the chalkboard and write all over it. At some point, someone pulls down a screen in front of part of the chalkboard. The problem is... when the screen is put back up, the part of the chalkboard that was covered is now erased.

How do I code to resolve that issue.

Re: How to handle drawing into bitmaps and PAINT issues

«_Superman_»13-Jul-09 18:03

«_Superman_»

13-Jul-09 18:03

dhomas wrote:
when the screen is put back up

This is what I meant by reverse an action.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: How to handle drawing into bitmaps and PAINT issues

dhomas13-Jul-09 18:07

dhomas

13-Jul-09 18:07

This seems to suggest an approach that may work...

http://www.codeguru.com/forum/showthread.php?t=305095[^]

Pausing the Application until a OK Button is pressed?

dipuks13-Jul-09 13:02

dipuks

13-Jul-09 13:02

Hello

I am working on a Win32 Application in Visual Studio 2003 environment.

I want the whole app to wait until USER click an OK button on the screen.

This app has multiple threads running simultaneously. So is it possible to stop the whole app until an OK button is pressed?

Re: Pausing the Application until a OK Button is pressed?

Stuart Dootson13-Jul-09 13:23

Stuart Dootson

13-Jul-09 13:23

you could suspend[^] all your threads (EXCEPT the UI thread, of course!) when you start the wait and resume[^] them if OK is pressed?

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

why we can't overload .,->, :: operators?

sam_psycho13-Jul-09 9:51

sam_psycho

13-Jul-09 9:51

why we can't overload .,->, :: operators?

Re: why we can't overload .,->, :: operators?

David Crow13-Jul-09 9:54

David Crow

13-Jul-09 9:54

The -> operator can be overloaded. The others cannot. See here for why.

Re: why we can't overload .,->, :: operators?

sam_psycho13-Jul-09 10:09

sam_psycho

13-Jul-09 10:09

Thnx very good link....i got many things cleared Smile | :)

VC++ -- Minimize all windows within MDI

blueflame21313-Jul-09 8:38

blueflame213

13-Jul-09 8:38

Hello,
I'm having problems with minimizing all windows within an MDI at the same time. I can loop through all open windows and minimize them one at a time (but that causes lots of delay with more than 5 windows, as they all go one after the other).

I can minimize the whole application with:
::SendMessage(pMainFrame->m_hWnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);

or I can minimize individual active frames with:
::SendMessage(pMainFrame->GetActiveFrame()->m_hWnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);

But how do I minimize them all at once?

Thanks for your help,
Dave

Re: VC++ -- Minimize all windows within MDI

David Crow13-Jul-09 9:08

David Crow

13-Jul-09 9:08

That's not a standard message but an application-specific thing. As far as I know, closing them one at a time is your only option.

Just for grins, what would happen if you posted the message instead:

::PostMessage(pMainFrame->GetActiveFrame()->m_hWnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);

pMainFrame->GetActiveFrame()->PostMessage(WM_SYSCOMMAND, SC_MINIMIZE, 0);

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