C / C++ / MFC

Re: how to integrate a console C++ program to MFC program

14-Jul-06 10:15

mrby123 wrote:
"unexpected end of file while looking for precompiled header directive."

Uncheck "using precompiled librares" option in the project setting.

From you described, there shouldn't be big problems. Post the errors you have got.

Best,
Jun

eusto14-Jul-06 10:27

eusto

14-Jul-06 10:27

Or include stdafx in every implementation file.
You only have to change output methods ( cin, cout, printf etc) to dialogs and messageboxes.

Also, the main() function is no longer needed (..you'll have to rename it and call it when a user presses a button or something)

CProgressCtrl cannot be passed as a parameter

jon-8014-Jul-06 9:49

jon-80

14-Jul-06 9:49

I tried to create a simple function that would display values on a progress bar. The compiler is returning:
c:\Documents and Settings\Jon\My Documents\Visual Studio Projects\IAD Practice and Assignment\C++ - Assignment\C++ - Assignment\01 - Primes\Primes\PrimesDlg.cpp(75): error C2228: left of '.SetPos' must have class/struct/union type

Any idea how to set the variable to point to the progress control bar control variable?

Function:
void setProgress(int uLowerBound, int uUpperBound, CProgressCtrl *progCtrlVar)
{ int iCountPrimes = 0;

for (int iCount = uLowerBound; iCount <= uUpperBound; iCount++)
{ if (isPrime(iCount) == true)
{iCountPrimes ++;}
}

progCtrlVar.SetPos(iCountPrimes * 0.1);
}

Calling example:
setProgress(1, 1000, m_Progress1);

Jon

PJ Arends14-Jul-06 10:18

PJ Arends

14-Jul-06 10:18

progCtrlVar is declared as a pointer to a CProgressCtrl. Use

progCtrlVar->SetPos

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good, use it!!!

eusto14-Jul-06 10:19

eusto

14-Jul-06 10:19

progCtrlVar is a pointer. Calling it's members is done with '->' not '.' (ie: progCtrlVar->SetPos(..) )
rtfm

PJ Arends14-Jul-06 10:26

PJ Arends

14-Jul-06 10:26

eusto wrote:
rtfm

And how does that help an obvious beginner who is struggling with the concept of pointers? Pointers are not an easy concept for a beginner to wrap their heads around, why do you think VB and C# are so popular?

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good, use it!!!

eusto14-Jul-06 10:33

eusto

14-Jul-06 10:33

So maybe he should use VB and C#? From a syntax point of view pointer are not that difficult. Knowing when to use them is the tricky part.

Get button color from theme

Hamid_RT14-Jul-06 19:07

Hamid_RT

14-Jul-06 19:07

You declare CProgressCtrl *progCtrlVar so you need to use
progCtrlVar->SetPoselse you can declare CProgressCtrl progCtrlVar; and then use

progCtrlVar.SetPos <br />
<br />
<font size="2" color="#99ff66"><hr></font><div style="padding: 2px; text-align: left; color: rgba(255, 255, 255, 1); width: 80px"><font size="2" color="#99ff66">whitesky<br />
</font></div><hr>

cje14-Jul-06 8:28

cje

14-Jul-06 8:28

I have just added a manifest to my project so that I can get the XP theme. I am having trouble getting the button colors so that my owner-drawn buttons can conform to the theme. I have tried GetThemeSysColor( hTheme, COLOR_BTNFACE ) but it doesn't return the correct value. I'm currently hard-coding (yuk) the RGB values for the button color in it's pressed and unpressed states but most certainly would like to be able to get the value programatically.

any ideas?

cje

cje

Re: Get button color from theme

Joe Woodbury14-Jul-06 9:26

Joe Woodbury

14-Jul-06 9:26

The proper identifier is TMT_BTNFACE, which has a different value than COLOR_BTNFACE.

Also note that button faces in the XP themes may have a gradiant, not a single color. If you want the same look, check out DrawThemeBackground or related functions.

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

dynamic arrays in classes - are they correct?

jon-8014-Jul-06 8:13

jon-80

14-Jul-06 8:13

I'm creating a class and trying to create a dynamic array of Prime Numbers. However, the compiler is giving this error:

c:\Documents and Settings\Jon\My Documents\Visual Studio Projects\IAD Practice and Assignment\C++ - Assignment\C++ - Assignment\01 - Primes\Previous Versions\v0.3\Primes\PrimeGen.cpp(39): error C2664: 'CPrimeGen::isPrime' : cannot convert parameter 1 from 'int' to 'int *'

class CPrimeGen
{
public:
CPrimeGen(int iUpperBound);
CPrimeGen(int iUpperBound, int iInterval);
CPrimeGen(int iLowerBound, int iUpperBound, int iInterval);
virtual ~CPrimeGen();

bool isPrime (int iNumber);
bool *PrimeNumber; // array of PrimeNumbers

};

PrimeGen.cpp
CPrimeGen::CPrimeGen(int iUpperBound)
{
int iNoOfIntervals = iUpperBound + 1;
this->PrimeNumber = new bool[iNoOfIntervals];

for (int iIndex = 1; iIndex <= iUpperBound; iIndex++)
{
if (isPrime(iIndex) == true)
{this->PrimeNumber[iIndex] = true;}
else
{this->PrimeNumber[iIndex] = false;}
}

}
CPrimeGen::CPrimeGen(int iUpperBound, int iInterval)
{
int iNoOfIntervals = (iUpperBound / iInterval) + 1;
this->PrimeNumber = new bool[iNoOfIntervals];

for (int iIndex = 1; iIndex <= iUpperBound; iIndex+= iNoOfIntervals)
{
if (isPrime(iIndex) == true)
this->PrimeNumber[iIndex] = true;
else
{this->PrimeNumber[iIndex] = false;}
}
}

CPrimeGen::CPrimeGen(int iLowerBound, int iUpperBound, int iInterval)
{
int iNoOfIntervals = ((iUpperBound - iLowerBound + 1) / iInterval ) + 1;
this->PrimeNumber = new bool[iNoOfIntervals];

for (int iIndex = iLowerBound; iIndex <= iUpperBound; iIndex+= iNoOfIntervals)
{
if (isPrime(iIndex) == true)
this->PrimeNumber[iIndex] = true;
else
{this->PrimeNumber[iIndex] = false;}
}
}

CPrimeGen::~CPrimeGen(void)
{
delete [] PrimeNumber;
}

bool CPrimeGen::isPrime(int iNumber)
{

/* hard-setting prime numbers */
if (iNumber <= 1) return false;

/* Algorithm: Sieve of Erastosthenes*/

int *mPrimeNumber;
mPrimeNumber = new int[iNumber + 1];
int iIndex;

/* initialize values
0: not set
1: prime
2: not-prime
*/
for (iIndex = 0; iIndex <= iNumber; iIndex++)
{mPrimeNumber[iIndex] = 0;}

iIndex = 2;
mPrimeNumber[iIndex] = 1;
for (iIndex = iIndex * iIndex; iIndex <= iNumber; iIndex += 2)
{mPrimeNumber[iIndex] = 2;}

iIndex = 2;
while (iIndex <=iNumber)
{
iIndex++;
// the next unset number is a prime
if (mPrimeNumber[iIndex]==0)
{ mPrimeNumber[iIndex] = 1;

// multiples of iIndex set as non-prime
for (int iInnerIndex = iIndex * 2; iInnerIndex <= iNumber; iInnerIndex += iIndex)
{mPrimeNumber[iInnerIndex] = 2;}}
}

// set return value
switch (mPrimeNumber[iNumber])
{ case 1:
{
delete [] mPrimeNumber;
return true;
break;
}
case 2:
{
delete [] mPrimeNumber;
return false;
break;
}
}
};

Jon

Re: dynamic arrays in classes - are they correct?

cje14-Jul-06 9:05

cje

14-Jul-06 9:05

I just compiled this code without any compiler or link errors

cje

Re: dynamic arrays in classes - are they correct?

Zac Howland14-Jul-06 9:29

Zac Howland

14-Jul-06 9:29

To address your problem, check to make sure your header file doesn't have it declared as:

bool CPrimeGen::isPrime(int* iNumber).

Everything else looks okay from a warning/error point of view.

Some things you might want to consider:
Instead of storying true/false for each integer index, you might want to use a vector<long> or a CDWordArray to just story values that are prime numbers. Allowing a class that already handles memory allocation to store your array is less likely to introduce memory leaks and logic errors in your code (and makes it far less lines of code). Storing just the prime integers allows you to decrease your memory footprint when searching for prime numbers in a large range.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: dynamic arrays in classes - are they correct?

Hamid_RT15-Jul-06 5:03

Hamid_RT

15-Jul-06 5:03

Which line has this error?

whitesky

VS2005 Team

Alex_Y14-Jul-06 8:12

14-Jul-06 8:12

Can I open solution in created in VS2005 professional in VS2005 Team Developer is any migration or any know issues going?

Smile | :)

Jun Du14-Jul-06 8:22

14-Jul-06 8:22

Do you mean Visual Stuio Team System (VSTS)? Visual Studio.NET is the majort part of VSTS. Besides, VSTS also incorporated project management, source control, bug reporting and so on.

Best,
Jun

Alex_Y14-Jul-06 8:43

14-Jul-06 8:43

Imagine I created my project in VS2005 professional at the moment when Team Edition wasn't released yet. Now I got Team Developer if I open solution/project in Team developer created in VS2005Prof is it going to migrate project or no migration needed?

Smile | :)

Jun Du14-Jul-06 9:23

14-Jul-06 9:23

No migration to your Visual Studio.NET projects. The Team System uses the very same VC++.NET as its compiler. Of course, you need to set up Team System, such as Microsoft Fundation Server. But this has nothing to do with project migration. Project migration is only required when your compiler is upgraded, such as VC6 to VC7 to VC8.

Best,
Jun

Alex_Y14-Jul-06 9:36

14-Jul-06 9:36

Thanks. Any tips convering projects fom VC6 -> VC8

Smile | :)

Jun Du14-Jul-06 9:49

14-Jul-06 9:49

In most cases, just load the VC6 project to VC8. The migration will be performed by VC8 automatically.

Best,
Jun

Alex_Y14-Jul-06 11:25

What's the best way to do this?

14-Jul-06 11:25

Yes thanks. I mean didyou discover any obvious issues I need to take care?

Thanks anyway for usefull info.

Smile | :)

Alex Cutovoi14-Jul-06 8:07

Alex Cutovoi

14-Jul-06 8:07

Hi fellows

I'm creating a app that reads data from a database and creates a graphic to show the results. I have a problem with this. I'll have a lot of registers, about 50000. I've think to sum the quantities of the registers and adjust the x-axis and the y-axis according this values. But for this I need to have a big screen resolution. How can I do this to show for the user adjusting in the window program? If anyone knows please tell me. I just want to get an idea, only this, not the entire solution.
I put a piece of code if anyone gets interesting

<br />
RECT tempRect, myRect;<br />
         GetClientRect(hwnd, &tempRect);<br />
         HBRUSH rectBrush;<br />
         char cTemp3[10];<br />
         int iSize = sizeof(tempPoint)/sizeof(POINT);<br />
         int iXMarquees, iYMarquees, iXSpace, iYSpace = 0;<br />
         POINT points[iSize], tmpPoint;<br />
         LOGPEN LogPen;<br />
         HPEN GraphicPen, LinesPen;<br />
         tmpPoint.x = 2;<br />
         LogPen.lopnStyle = PS_SOLID;<br />
         LogPen.lopnWidth = tmpPoint;<br />
         LogPen.lopnColor = 0x00000000;<br />
         GraphicPen = CreatePenIndirect(&LogPen);<br />
         for(int i = 0 ; i < iSize ; i++)<br />
         {<br />
            points[i].x = (ixClient * tempPoint[i].x)/400;<br />
            points[i].y = (int)(((iyClient * tempPoint[i].y)/450)-iLine)+iYConst;<br />
         }<br />
         hdc = BeginPaint(hwnd, &ps);<br />
         SelectObject(hdc, GraphicPen);<br />
         SetBkMode(hdc, TRANSPARENT);<br />
         TextOut(hdc, ixClient/2, iLine, TEXT("Olá"), sizeof("Olá"));<br />
         Polyline(hdc, points, (sizeof(points)/sizeof(POINT)));<br />
         //Eixo x-y<br />
         iXGraphLine = tempRect.right-80;<br />
         iYGraphLine = (tempRect.bottom-150)-iLine;<br />
         //Pen do eixo x-y<br />
         tmpPoint.x = 2;<br />
         LogPen.lopnStyle = PS_SOLID;<br />
         LogPen.lopnWidth = tmpPoint;<br />
         LogPen.lopnColor = 0x00FF0000;<br />
         LinesPen = CreatePenIndirect(&LogPen);<br />
         SelectObject(hdc, LinesPen);<br />
         iXSpace = iXGraphLine/(iSize*2);<br />
         iYSpace = iYGraphLine/(iSize*2);<br />
         for(int i = 0, iXpos = iXSpace, iYpos = iYSpace, iXFont = 10 ; i < iSize*2 ; i++)<br />
         {<br />
            SelectObject(hdc, LinesPen);<br />
            char cTemp10[5];<br />
            //Desenha as linhas divisórias do eixo X<br />
            MoveToEx(hdc, (iXpos-15), iYGraphLine-10-iLine, NULL);<br />
            LineTo(hdc, (iXpos-15), iYGraphLine+10-iLine);<br />
            itoa(iXpos, cTemp10, 10);<br />
            cTemp10[5]='\0';<br />
            /* Calcula a posição do texto de acordo com o tamanho entre *<br />
             * as divisões da linha horizontal e do tamanho do texto    */<br />
            SetTextAlign(hdc, TA_CENTER);<br />
            TextOut(hdc, iXpos-(((strlen(cTemp10)*iXCaps)+iXChar)/strlen(cTemp10))-2, iYGraphLine+10-iLine, cTemp10, strlen(cTemp10));<br />
            iXFont+=iXSpace/2;<br />
            iXpos+=iXSpace;<br />
            //Desenha as linhas divisórias do eixo Y<br />
            MoveToEx(hdc, 5, (iYpos-15)-iLine, NULL);<br />
            LineTo(hdc, 25, (iYpos-15)-iLine);<br />
            itoa(iYpos, cTemp10, 10);<br />
            TextOut(hdc, 40, (((iYSpace*((iSize*2)-i))-4)-(((strlen(cTemp10)*iXCaps)+iYChar)/strlen(cTemp10))-2)-iLine, cTemp10, strlen(cTemp10));<br />
            iYpos+=iYSpace;<br />
            SelectObject(hdc, GraphicPen);<br />
            SelectObject(hdc, CreateSolidBrush(0x00000000));<br />
            if(i < 5)Pie(hdc, points[i].x-4, points[i].y-4, points[i].x+4, points[i].y+4, 10,10,0,0);<br />
         }<br />
         SelectObject(hdc, LinesPen);<br />
         //Linha Vertical<br />
         MoveToEx(hdc, 15, -iLine, NULL);<br />
         LineTo(hdc, 15, iYGraphLine-iLine);<br />
         //Linha Horizontal<br />
         MoveToEx(hdc, 15, iYGraphLine-iLine, NULL);<br />
         LineTo(hdc, iXGraphLine, iYGraphLine-iLine);<br />
         rectBrush = CreateSolidBrush(0x00FFFFFF);<br />
         myRect.top    = (tempRect.bottom-100-iLine*2);<br />
         myRect.bottom = (tempRect.bottom-10-iLine*2);<br />
         myRect.left   = 50;<br />
         myRect.right  = 200;<br />
         FillRect(hdc, &myRect, rectBrush);<br />
         SelectObject(hdc, GraphicPen);<br />
         MoveToEx(hdc, 60, ((myRect.bottom+myRect.top)/2)-30, NULL);<br />
         LineTo(hdc,  130, ((myRect.bottom+myRect.top)/2)-30);<br />
         TextOut(hdc, 160, ((myRect.bottom+myRect.top)/2-30-(((strlen("Lalala")*iXCaps)+iYChar)/strlen("Lalala"))+2), "Lalala", strlen("Lalala"));<br />
         EndPaint(hwnd, &ps);<br />
         DeleteObject(GraphicPen);<br />
         DeleteObject(LinesPen);<br />
         DeleteObject(rectBrush);<br />
         ReleaseDC(hwnd, hdc);<br />
<code>

Re: What's the best way to do this?

Jun Du14-Jul-06 8:27