Re: RTTI - C / C++ / MFC Discussion Boards

uday kiran janaswamy1-Aug-06 1:02

1-Aug-06 1:02

hi Manjunath,

It is possible to add tooltips for the Static Text, In the Resource Editor for every StaticText ID give a meaning String value.

in the Coding part call CString.LoadString(IDC_ResourceSringID);

Then use CToolTipCtrl ctr;
Ctr.Create(this);

and Try....
//==================

uday.

Moving Ellipse Problem

uday kiran janaswamy1-Aug-06 0:34

uday kiran janaswamy

1-Aug-06 0:34

HI all,

I have created a ellipse using

CDC::Ellipse(...). but once i have created that ellipse i want to move the ellipse what i have created.

//======================================================================
if((insidepoint == true ) && (nFlags & MK_LBUTTON))
{
CRect rect;
GetClientRect(&rect);
ClientToScreen(&rect);
SetCapture();

nOldMode = dc.GetROP2();
dc.SetROP2(R2_NOT);
one.CreatePen(PS_DASHDOT,1,RGB(200,200,0));
old = dc.SelectObject(&one);
dc.SelectStockObject(NULL_BRUSH);

double dia = sqrt((array[2]-array[0])*(array[2]-array[0]) + (array[3]-array[1])*(array[3]-array[1]))/2;
//dc.Ellipse(OldPoint.x,OldPoint.y,(point.x + dia),(point.y + dia));
dc.Ellipse(point.x,point.y,(point.x + dia),(point.y + dia));
OldPoint = point;
dc.SetROP2(nOldMode);
dc.SelectObject(old);
showCordinates(point);
}
//======================================================================
please let me know any solution.

uday.

-- modified at 6:44 Tuesday 1st August, 2006

Re: Moving Ellipse Problem

Hamid_RT1-Aug-06 0:50

Hamid_RT

1-Aug-06 0:50

Whats problem?

WhiteSky

Re: Moving Ellipse Problem [modified]

uday kiran janaswamy1-Aug-06 0:53

uday kiran janaswamy

1-Aug-06 0:53

hi whitesky,

i have created an ellipse using cdc::ellipse(...).

but once it is created, and the mouse is entered into the ellipse what i have created, if i press the Left button and dragged the ellipse what i have drawn, it should move accordingly with the current position of the mouse.
please help me out. It is really a challenging task.
//===========================================================
if((insidepoint == true ) && (nFlags & MK_LBUTTON))
{
CRect rect;
GetClientRect(&rect);
ClientToScreen(&rect);
SetCapture();

// nOldMode = dc.GetROP2();
dc.SetROP2(R2_NOT);
one.CreatePen(PS_DASHDOT,1,RGB(200,200,0));
old = dc.SelectObject(&one);
dc.SelectStockObject(NULL_BRUSH);

double dia = sqrt((array[2]-array[0])*(array[2]-array[0]) + (array[3]-array[1])*(array[3]-array[1]))/2;
dc.Ellipse(OldPoint.x,OldPoint.y,(point.x + dia),(point.y + dia));
dc.Ellipse(point.x,point.y,(point.x + dia),(point.y + dia));
OldPoint = point;
// dc.SetROP2(nOldMode);
dc.SelectObject(old);
showCordinates(point);
}

//===========================================================

please help me out.

uday.

-- modified at 6:54 Tuesday 1st August, 2006

Re: Moving Ellipse Problem

Hamid_RT1-Aug-06 1:27

Hamid_RT

1-Aug-06 1:27

if i understand you need to WM_LBUTTONMouse and WM_MOVEMOUSE
for your purpose and you can use from point for position x,y in these messages
-------
i think you can use also from a control (button or...) with a shape like ellipse instead this way

WhiteSky

Re: Moving Ellipse Problem

uday kiran janaswamy1-Aug-06 1:30

uday kiran janaswamy

1-Aug-06 1:30

Hello,

I wrote a simple programm using Visual C++ where I want to move a cirle
in a window via drag&drop. I used the pDC->Ellipse() and the
InavlidateRect() functions for drawing the circle.
So far it works. But I have two problems:
1. When I move the mouse quickly during a drag&drop, not the entire
"old" cicle disappears so that I get a trace of the way I moved the
cicrle around
2. How can I implement that with a flicker-free window? (perhaps the
InvalidateRect() and pDC->Ellipse() functions aren't very useful for my
intentions and I should use other functions)

Uday kiran

Uday kiran

RTTI

vikramlinux31-Jul-06 23:59

vikramlinux

31-Jul-06 23:59

Hi Friends,
I have a question about RTTI.
1) In C++ we have vptr pointing to vtables which helps to make use of
pointer as polymorphic entities.
2) Without knowing object type I can call methods of object using
those pointers.
So in which case RTTI is needed? ( Why I need to know my object
type?) What is the use case?

Vikram S

Re: RTTI

toxcct1-Aug-06 0:36

toxcct

1-Aug-06 0:36

class CObject {}
 
class CCar : public CObject {}
 
class CBus : public CObject {}
 
class CBike : public CObject {}
 
std::vector<CObject> vecVehicles;

then, how do you know if the elements inserted in the vector are Cars, Buses or Bikes without RTTI ?

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: RTTI

ThatsAlok1-Aug-06 23:52

ThatsAlok

1-Aug-06 23:52

toxcct wrote:
then, how do you know if the elements inserted in the vector are Cars, Buses or Bikes without RTTI ?

Right!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

SQL Scripting in a Batch File

Programm3r31-Jul-06 23:55

Programm3r

31-Jul-06 23:55

Hi all,

I wrote a batch file, with I call from my VC program, but....

Well first of all, I would like to know if it is possible to put sql scripting in a batch file for execution?

I can connect to the MySql Server with a batch file but can't execute anymore commands (MySql command like reading from a file). I don't know how to do this, so If anyone could point me to a site or help me .... well just thanx in advance

Regards

Programm3r

Regards

Programm3r

Re: SQL Scripting in a Batch File

toxcct31-Jul-06 23:57

toxcct

31-Jul-06 23:57

this is more a question for the SQL forum[^] or even for the general questions forum

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: SQL Scripting in a Batch File

Programm3r31-Jul-06 23:59

Programm3r

31-Jul-06 23:59

Thought so ..... my bad

Thanx anyway
Blush | :O

Regards

Programm3r

Re: SQL Scripting in a Batch File

David Crow1-Aug-06 3:16

David Crow

1-Aug-06 3:16

A batch (.bat) file is nothing more than a collection of commands that could just as easily be executed from a command prompt. That said, if you can issue the SQL commands from a command prompt, then you can also do such from a batch file.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

Compressing & Uncompressing of text file

Suresh H31-Jul-06 23:37

Suresh H

31-Jul-06 23:37

Hi,

I have one program which writes some text to a file, and save it and closes.
If we click on the file the contents can be read {text file}.

I want to know is there any way I can make a file unreadable when its opened from outside, I want to know to how to compress when file when it is closed and uncompressed when it is opened by the program.

Can u please give me some suggestions.

Thanking you,
Suresh H.

Re: Compressing & Uncompressing of text file

Marc Soleda1-Aug-06 0:12

Marc Soleda

1-Aug-06 0:12

Why don't you encrypt/decrypt it?

Marc Soleda

... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

Re: Compressing & Uncompressing of text file

Suresh H1-Aug-06 0:16

Suresh H

1-Aug-06 0:16

Hi, Thanks for the reply.

How to do that ??? can u please give me some suggestions and also along that i want to compress the file.

Re: Compressing & Uncompressing of text file

Marc Soleda1-Aug-06 0:58

Marc Soleda

1-Aug-06 0:58

You can find several in Criptography[^] category.

I have tested this one[^] and I think you could use it. All depends on the degree of security you need or if you just needs a first stop for a possible opener.

I hope it helps,
Marc Soleda

... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

Re: Compressing & Uncompressing of text file

Hamid_RT1-Aug-06 0:22

Hamid_RT

1-Aug-06 0:22

SeeZipper Component [^] maybe it is some helpful to you

WhiteSky

Re: Compressing & Uncompressing of text file

Suresh H1-Aug-06 0:43

Suresh H

1-Aug-06 0:43

Thank you very much for the link I will check it.

ActiveX function return pointer

majco33331-Jul-06 23:33

majco333

31-Jul-06 23:33

Hi,

I need create function which returned pointer

for example:

void* tmp;
return tmp

Can ActiveX returned pointer to the external application???
Because I don't know how do it.

Function in external apllication which used ActiveX is for e.:

InvokeHelper(0x11, DISPATCH_METHOD, VT_BOOL, (void*)&result, NULL);

instead VT_BOOL I need poiter variable...

Please help me...

GUI technologies [modified]

A_Fa31-Jul-06 23:33

A_Fa

31-Jul-06 23:33

Hi all friends .

Is any technology for developing graphics program (GUI programming) faster than DirectDraw ?

Thank in advance .

Re: GUI technologies

Hamid_RT1-Aug-06 0:22

Hamid_RT

1-Aug-06 0:22

What do you need?

WhiteSky

Re: GUI technologies

ThatsAlok1-Aug-06 23:52

ThatsAlok

1-Aug-06 23:52

A_Fa wrote:
Is any technology for developing graphics program (GUI programming) faster than DirectDraw ?

Is OpenGl is of any use? do you want to make game?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

PrintPreview problem

mikobi31-Jul-06 23:28

mikobi

31-Jul-06 23:28

Dear Sir,
I still have difficult to do printPreview.

I need to do printPreview without doc/view facilities , to preview more than one pages.
And I can have more than one dialogs to preview.

Who can help me?

Re: PrintPreview problem

Christopher Stratmann31-Jul-06 23:58

Christopher Stratmann

31-Jul-06 23:58

This is what I used. I first got printing to work without the doc/view architecture. Check this out. http://www.codeproject.com/printing/printing_wo_docview.asp[^] After that I moved on to the print preview. I used this....http://www.codeproject.com/printing/printextension.asp[^] As you can see on this last web page are a couple of comments at the bottom of the web page of the troubles and fixes which I have encountered.

Chris

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