C / C++ / MFC

Re: How to display the program code as output using C or C++

4-Oct-08 1:02

hai,
i would like to display the coding.
Means, while i m running my C/C++ program the output should be of the program coding which i m execting.....

how can i do it? Help me!

Thanks for understanding!!!

enhzflep4-Oct-08 1:10

Re: How to display the program code as output using C or C++

4-Oct-08 1:10

You need to (A) debug a debugger or (B) dissasemble/decompile a dissasembler/decompiler

Then, the program running would be doing nothing other than producing output that contained the program's source-code

I don't understand your question, as it stands. The effort would be pointless - an act of 'because I can'

Karan_TN4-Oct-08 1:16

Re: How to display the program code as output using C or C++

4-Oct-08 1:16

Thanks for immediate reeply

for example...

my program coding is..

#include<stdio.h>
#include<conio.h>
void main() 
{ 
float n1,n2,ans;
}</conio.h></stdio.h>

And the program output should be....

#include<stdio.h>
#include<conio.h>
void main()
{
float n1,n2,ans;
}

how to achieve it?

thanks in advance

enhzflep4-Oct-08 1:39

Re: How to display the program code as output using C or C++

4-Oct-08 1:39

Ahhhh....

I was afraid you were going to say that or words to that effect.

What you're looking for is a decompiler or a dissasembler. The difference is in the 'high-level'ness of their output. A dissasembler will turn a piece of executable code into an assembly listing. A decompiler on the other hand, will produce C (or most any other high level language within reason) code from an executable.

While it is true that a fairly large number of people have written dissasemblers, the same
can't be said for decompilers. It is a notoriously difficult & complex subject.

HexRays has a product that will turn an exe file into C source code - it is the $2000 plugin for IDA Pro interactive dissasembler.

You can find more info on HexRays here (they have a free version of IDAPro)
http://www.hex-rays.com/products.shtml[^]

Also, here are some links to decompilers/dissasemblers that people have coded themselves:
http://www.woodmann.com/collaborative/tools/index.php/Category:Decompilers[^]
http://www.woodmann.com/collaborative/tools/index.php/Category:Disassemblers[^]

'luck.

Karan_TN4-Oct-08 2:04

Re: How to display the program code as output using C or C++

4-Oct-08 2:04

thanks for your reply.
whether this can be achieve in .net easily? or someother language?

enhzflep4-Oct-08 2:39

Re: How to display the program code as output using C or C++

4-Oct-08 2:39

Pleasure.

In every case I can immediately think of, these tools are compiled to native code. This of course implies the use of C/C++, asm & pascal though I've no idea if anything .NET would be suitable or not - I would assume it to be possible, albeit slow in execution on account of the code being interpreted at runtime.

Lutz Roeder's .NET Reflector will give you the source code of a .NET executable. The Deblector & Reflexil plugins are invaluable - HOWEVER these are all only available as binaries, so of very little to no interest to somebody trying to create a tool that achieves the same task.

Karan_TN6-Oct-08 0:53

Re: How to display the program code as output using C or C++

6-Oct-08 0:53

ah... this much complicated is there??? since this question was raised by my professor. He ask to find the answer and the coding for this.

PravinSingh6-Oct-08 22:20

PravinSingh

6-Oct-08 22:20

The program that reproduces its own source as output is called quine (After American logician Willard Van Orman Quine). There are many ways to do it, but rather than I give you a complete working example, I'd appreciate if you google for quine and go through the results. Smile | :)

It's better to know some of the questions than all of the answers.

Pravin.

Visual Studio Express Edition 2008 for Commercial Application

Karmendra Suthar3-Oct-08 22:15

Karmendra Suthar

3-Oct-08 22:15

Hi,
Can I Use Visual Studio Express Edition 2008 for developing Commercial Application?

Thanks Saurabh For information, just need to confirm with the forum.

Thnaks everyone

Karmendra

Re: Visual Studio Express Edition 2008 for Commercial Application

CPallini4-Oct-08 0:47

CPallini

4-Oct-08 0:47

Yes: see http://www.microsoft.com/express/support/faq/[^], question 7.
Smile | :)

GradientFill in Moving Dialog..

gothic_coder3-Oct-08 21:27

3-Oct-08 21:27

Hi all..

Can i fill my Moving dialog, Bubble Dialog with gradient color???
Can someone throw light on that??

Thanks..

enhzflep3-Oct-08 21:58

3-Oct-08 21:58

My mind reader's on the blink today.

Try this on for size.

// frees you from using the GDI function, which requires a region
void GradientFillRect(HDC hdc, LPRECT rcGradient, COLORREF start, COLORREF end, BOOL isVertical)
{
	BYTE startRed = GetRValue(start);
	BYTE startGreen = GetGValue(start);
	BYTE startBlue = GetBValue(start);

	BYTE endRed = GetRValue(end);
	BYTE endGreen = GetGValue(end);
	BYTE endBlue = GetBValue(end);

	HBRUSH endColor = CreateSolidBrush(end);
	FillRect(hdc, rcGradient, endColor);
	DeleteObject(endColor);

	//Gradient line width/height
	int dy = 1;

	int length = (isVertical ? rcGradient->bottom - rcGradient->top : rcGradient->right - rcGradient->left) - dy;

	for (int dn = 0; dn <= length; dn += dy)
	{
		BYTE currentRed = (BYTE)MulDiv(endRed-startRed, dn, length) + startRed;
		BYTE currentGreen = (BYTE)MulDiv(endGreen-startGreen, dn, length) + startGreen;
		BYTE currentBlue = (BYTE)MulDiv(endBlue-startBlue, dn, length) + startBlue;

		RECT currentRect = {0};
		if (isVertical)
		{
			currentRect.left = rcGradient->left;
			currentRect.top = rcGradient->top + dn;
			currentRect.right = currentRect.left + rcGradient->right - rcGradient->left;
			currentRect.bottom = currentRect.top + dy;
		}
		else
		{
			currentRect.left = rcGradient->left + dn;
			currentRect.top = rcGradient->top;
			currentRect.right = currentRect.left + dy;
			currentRect.bottom = currentRect.top + rcGradient->bottom - rcGradient->top;
		}

		HBRUSH currentColor = CreateSolidBrush(RGB(currentRed, currentGreen, currentBlue));
		FillRect(hdc, ¤tRect, currentColor);
		DeleteObject(currentColor);
	}
}

gothic_coder3-Oct-08 22:53

3-Oct-08 22:53

Well just to be sure..Please explain some parameters..Because i tried and it didn't work..

void GradientFillRect(HDC hdc, LPRECT rcGradient, COLORREF start, COLORREF end, BOOL isVertical)

1. hdc is handle of device context(dialog box)..
hdc = GetDC(hWnd);

2. rcGradient is rect structure of my dialog box..
GetWindowRect(hWnd, &myWindowRect);

3. COLORREF start is my start color of blue (I need blue gradient)
The Blue hex number.

4. COLORREF end is my end color of blue.
The blue hex number (end).

5. BOOL isVertical???

gothic_coder3-Oct-08 23:30

3-Oct-08 23:30

Alright now i'm passing something like this..

hdc_myWindow = GetDC(hWnd);
GetWindowRect(hWnd, &thisWindowRect);
static COLORREF StartColor = RGB(0,0,238);
static COLORREF EndColor = RGB(0,0,250);
GradientFillRect(hdc_myWindow,&thisWindowRect,StartColor,EndColor, FALSE);

And i believe

HBRUSH currentColor = CreateSolidBrush(RGB(currentRed, currentGreen, currentBlue));
FillRect(hdc, ¤tRect, currentColor);

Entries are right..I mean currentRed,currentGreen is 0 and currentBlue is what i need...Everything seems to be right.. But my dialog is still Grey Confused | :confused:

enhzflep4-Oct-08 1:05

4-Oct-08 1:05

Cool magool, at least I'm on the right track.
Been eating dinner, sorry to leave you waiting.

It seems that the thing that strikes me is that I forgot Blush | :O

the fact that the function
expects the rect to be logical units - not screen units.

Say if I have a 10x10 rect located at 50,50 on the screen, the function wants

RECT gradRect = {0,0, 10,10} not RECT gradRect = {50, 50, 60, 60} like you would expect.

Sorry for the confusion there.

As for the bool isVerticle param, you can run the gradient from leftToRight or topToBottom.
isVerticle = true ---> topToBottom gradient
isVerticle = false ---> leftToRight gradient

Here's a 45 second example. You need to link in gdi32, user32 and kernel32.
No points for guessing which IDE I've used $Shucks | :-\$

#include <windows.h>

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
char szClassName[ ] = "CodeBlocksWindowsApp";

int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nCmdShow)
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "Code::Blocks Template Windows App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );

    /* Make the window visible on the screen */
    ShowWindow (hwnd, nCmdShow);

    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}



// frees you from using the GDI function, which requires a region
void GradientFillRect(HDC hdc, LPRECT rcGradient, COLORREF start, COLORREF end, BOOL isVertical)
{
	BYTE startRed = GetRValue(start);
	BYTE startGreen = GetGValue(start);
	BYTE startBlue = GetBValue(start);

	BYTE endRed = GetRValue(end);
	BYTE endGreen = GetGValue(end);
	BYTE endBlue = GetBValue(end);

	HBRUSH endColor = CreateSolidBrush(end);
	FillRect(hdc, rcGradient, endColor);
	DeleteObject(endColor);

	//Gradient line width/height
	int dy = 1;

	int length = (isVertical ? rcGradient->bottom - rcGradient->top : rcGradient->right - rcGradient->left) - dy;

	for (int dn = 0; dn >= length; dn += dy)
	{
		BYTE currentRed = (BYTE)MulDiv(endRed-startRed, dn, length) + startRed;
		BYTE currentGreen = (BYTE)MulDiv(endGreen-startGreen, dn, length) + startGreen;
		BYTE currentBlue = (BYTE)MulDiv(endBlue-startBlue, dn, length) + startBlue;

		RECT currentRect = {0};
		if (isVertical)
		{
			currentRect.left = rcGradient->left;
			currentRect.top = rcGradient->top + dn;
			currentRect.right = currentRect.left + rcGradient->right - rcGradient->left;
			currentRect.bottom = currentRect.top + dy;
		}
		else
		{
			currentRect.left = rcGradient->left + dn;
			currentRect.top = rcGradient->top;
			currentRect.right = currentRect.left + dy;
			currentRect.bottom = currentRect.top + rcGradient->bottom - rcGradient->top;
		}

		HBRUSH currentColor = CreateSolidBrush(RGB(currentRed, currentGreen, currentBlue));
		FillRect(hdc, ¤tRect, currentColor);
		DeleteObject(currentColor);
	}
}


/*  This function is called by the Windows function DispatchMessage()  */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    RECT myRect;
    COLORREF startCol = RGB(71,71,71), endCol = RGB(200,200,200);

    switch (message)                  /* handle the messages */
    {
        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
        case WM_ERASEBKGND:
            GetClientRect(hwnd, &myRect);
            GradientFillRect(HDC (wParam), &myRect, startCol, endCol, false);
            return 1;                           // indicate that WM_ERASEBKGND was handled

        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }
    return 0;
}

gothic_coder4-Oct-08 1:21

4-Oct-08 1:21

Woooaaahhhhhhh... Really Thanks enhzflep.. You don't know you have solved my creepy problem...

Anyways WM_ERASEBKGND: was actually the main KEY...

Don't know you're Guy or Girl but in any case a rose for you Rose | [Rose]

Thanks a ton...

enhzflep4-Oct-08 1:57

4-Oct-08 1:57

Beautiful!! Smile | :)

Glad it helped. Something else you can do is use a bitmap then create a patterned brush from that. If you create your own class like I did in that example, you can just set the background brush of your window class to the patterned brush that holds your bitmap. Windows will automatically tile your background image. So, if I have a window thats 100 x 600 pixels and I just want a left to right gradient, I'll just create a 100 x 1 bitmap and assign it to the background brush. Super light on code, super-light on resources.

This means that you don't even have to handle the WM_ERASEBKGND messages.

Here's an example:

int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nCmdShow)
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */

//    HBITMAP hbmp = (HBITMAP)LoadImage(NULL, "image.bmp", IMAGE_BITMAP, 0,0,LR_DEFAULTSIZE|LR_LOADFROMFILE);
//    HBITMAP hbmp = readTGA("image2.tga");
//    HBITMAP hbmp = readRle24Tga("image2.tga");
    HBITMAP hbmp = loadTgaResource(GetModuleHandle(NULL), MAKEINTRESOURCE(1001));

    hbr = CreatePatternBrush(hbmp);
    DeleteObject(hbmp);


    if (!hbmp)
    {
        MessageBox(NULL, "Couldn't load image file", "ERROR", MB_ICONEXCLAMATION);
        return 0;
    }

//    hbr = CreateSolidBrush(RGB(0xd4,0xd0,0xc8));
    wincl.hbrBackground = hbr;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

You find a bunch of gems like this trick in any of the books by Charles Petzold. I think this one came from the 10 year old "Programming Windows Fifth Edition" - I have it as a chm, there's I think there's also one available as a pdf

Oh, and thanks for the rose - the name's Simon.

gothic_coder4-Oct-08 2:50

4-Oct-08 2:50

Yeah i do have that Charles Petzold - "Programming Windows Fifth Edition".. In chm format...Seems have to go through it seriously...

And i'll definitely try this trick..

Thanks again..This is Ashish $Shucks | :-\$

gothic_coder4-Oct-08 3:01

4-Oct-08 3:01

Hey Simon.. A bit of confusion...

According to MSDN
"The Rectangle function draws a rectangle. The rectangle is outlined by using the current pen and filled by using the current brush."

So Gradient Fill actually fill the rectangle not the border or edges.
Initially i thought the dialog box border was black because of some dialog properties but i believe we've to tackle it programmatically...

Am i right???

enhzflep4-Oct-08 3:48

4-Oct-08 3:48

Hey Ashish,

not sure to be honest, I've never noticed that artifact.

Guess you could just expand the border by 1 pixel with something like:
rect.top--; rect.left--; rect.right++; rect.bottom++;

Nonetheless, that's a rather interesting problem - I'll have to look into that, thanks for the heads-up.

gothic_coder4-Oct-08 4:39