C / C++ / MFC Discussion Boards

raner13-Feb-03 6:11

13-Feb-03 6:11

i tried Validate(pDC) and this->Validate().

All of them gave me the same error msg(undeclared identifier)...

Should i place it before or after ReleaseDC() anyway?

thks.

Re: help needed displaying text

Roger Allen13-Feb-03 6:27

Roger Allen

13-Feb-03 6:27

Ooops,

sorry its:

ValidateRect()
Blush | :O

Roger Allen
Sonork 100.10016

Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003

Re: help needed displaying text

raner13-Feb-03 7:07

raner

13-Feb-03 7:07

it's ok;)

i called ValidateRect(graphRect) jus before ReleaseDC()...where graphRect is a CRect...is that right?

Re: help needed displaying text

Roger Allen13-Feb-03 22:24

Roger Allen

13-Feb-03 22:24

Thats should work ik. But just 1 small possible danger. If the update rectangle for the WM_PAINT call (which comes in a PAINTSTRUCT) is slightly larger than your graphRect then this could cause additional WM_PAINT messages to be sent to you. I usually do:

void X::OnPaint()
{
CDC pDC = GetDC();
// paint stuff
pDC_>ReleaseDC();
CPaintDC dc; // construct/destructs and validates the paint region
}

Roger Allen
Sonork 100.10016

Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003

Re: help needed displaying text

raner15-Feb-03 2:31

raner

15-Feb-03 2:31

i put "CPaintDC dc" but an error was returned stating no appropriate default constructor available, so i tried "CPaintDC dc(this)" n it complied successfully but it wiped out all i've drawn earlier.

here's my code...
void CGrapDlg::OnPaint()
{
CWnd* graphFrame = (CWnd*)GetDlgItem(IDC_GRAPH_FRAME);
CDC* pDC = graphFrame->GetDC();
plotGraph.Plot(pDC);
ReleaseDC(pDC);
CPaintDC dc(this);
}

have a nice weekend n thks Big Grin | :-D

API Hooking

vikramlinux12-Feb-03 19:50

vikramlinux

12-Feb-03 19:50

I am developing an API Hooking Module. Here I used the PE files IAT patching technique. The Procedure I used ,is like this:
1> Inject the DLL into the address space of process by CreateRemoteThread.
2> Parse the IAT with the help of Instance then patch the address with my funcion having same prototype.
I tested it on Notepad applicaion.
Here for ShowWindow it works only for Notepad window. For find dialog boxes and other dialogs it won't work.. Cry | :((

what is the possible reason? Plase help me ...

drag and drop

Vikram Patwardhan12-Feb-03 19:22

Vikram Patwardhan

12-Feb-03 19:22

Hi,
I want to Drag Images from 3rd party Applications(ex: irfan view) to my Application(image list control). Can i implement it using COleDropTarget class?. Confused | :confused:

Thanks in advance,
vikram

Re: drag and drop

Tili12-Feb-03 19:52

Tili

12-Feb-03 19:52

Well you can implement only if irfan view supports COleDropSource and of course COleDataObject.

To test it try dragging on one of famous applications like Adobe or Flash. If they get images then you have it.

-----------------------------
In my dream, I was dorwning my §orrow§
But my §orrow§, they learned to §wim

Re: drag and drop

xxhimanshu12-Feb-03 20:02

xxhimanshu

12-Feb-03 20:02

hi,
cehck this..
http://www.funducode.com/weeklyupdate/May_5_01/May_5.htm
followed by..
http://www.funducode.com/weeklyupdate/May_12_01/May_12.htm
i hope this function can do the desired work...
all the best and cheers

Himanshu

Recording avi files

vin12-Feb-03 18:28

vin

12-Feb-03 18:28

Hi,

I want to write an application to record the desktop and play it as avi files. Is there any article here that can help me with this.

Kindly help me..

Thanks for

Vini

Re: Recording avi files

-Dy12-Feb-03 22:52

-Dy

12-Feb-03 22:52

It's been done: http://www.codeproject.com/tools/camstudio.asp[^]

It's VERY good, the only thing it doesn't do is sound...

Dylan
Boycott Bush
Punch GWB

Re: Recording avi files

vin12-Feb-03 23:33

vin

12-Feb-03 23:33

thanks.....

vini

Rich Edit Control/Edit Control question

paully12-Feb-03 13:17

paully

12-Feb-03 13:17

How can I move the cursor in a Rich Edit Control? If someone chooses a html tag in a menu I want to put the starting and ending tags <bold> and place the caret in the middle for convenience. I can put the tags but I cant find a way to move the cursor in the middle. I'm assuming it's probably the same method for edit and rich edit controls. It will be for a SDI(doc/view) application. Thanks

paully

Re: Rich Edit Control/Edit Control question

MAAK12-Feb-03 14:44

MAAK

12-Feb-03 14:44

If you have to put the caret at a position pos in the control try to use

SetSel(pos, pos),

this should move the caret to that position.

Rich Edit Control/Edit Control question - Another one

Rage12-Feb-03 21:08

Rage

12-Feb-03 21:08

And how do we retrieve the caret position in a CRichEditCtrl ? There is no GetPos or whatever ...

~RaGE();

Re: Rich Edit Control/Edit Control question - Another one

MAAK12-Feb-03 21:33

MAAK

12-Feb-03 21:33

int pos1, pos2;
m_myRichEd.GetSel(pos1, pos2);

pos1 and pos2 are passed by reference, if thier is no selection they should be both equal to the current caret postion.

Re: Rich Edit Control/Edit Control question - Another one

paully13-Feb-03 11:47

paully

13-Feb-03 11:47

Thanks for the help!

paully

Need help on Appbar.

Artem Moroz12-Feb-03 13:08

Artem Moroz

12-Feb-03 13:08

I have remade APPBAR sample from MSDN.
It works OK, but when no explorer is running (e.g. TaskBar is not present), other windows can obscure my appbar. What should I do?

Varibles Spanning Multiple Dialogs

NPL Solutions12-Feb-03 13:08

NPL Solutions

12-Feb-03 13:08

I have 1 dialog with 4 edit boxes. Their variables are of type double. I have two other varibles that need to be included in my second dialog as static text.

To make this simple:

m_varA = m_editA \ m_editB;
m_varB = m_editC \ m_editD;

I want my static text to represent m_varA and m_varB. My code for the button that opens the new dialog is as follows:

{<br />
m_m = (m_strY2 - m_strY1) / (m_strX2 - m_strX2);<br />
if(m_strY1 < 0)<br />
{<br />
	m_b = (m_strY1 + m_m * m_strX1);<br />
}<br />
else<br />
{<br />
	m_b = m_strY1 - (m_m * m_strX1);<br />
}<br />
m_m = CSlopeDlg.m_m;<br />
m_b = CSlopeDlg.m_b;<br />
m_dCSlopeDlg.DoModal ();<br />
}

Where m_strX1, Y1, X2, Y2 are my edit boxes. m_m is one of the variables that I want to be displayed in my other dialog, and so with m_b.

All of my variables are of type double as I said before.

CSlopeDlg.m_m is the euqivilant of m_m in my first dialog. It is the static text. It is of type CString. Same with CSlopeDlg.m_b.

The compiler give me the same error twice, as expected:

error C2275: 'CSlopeDlg' : illegal use of this type as an expression see declaration of 'CSlopeDlg.

What should I do?

Am I even on the right track? Confused | :confused:

Thanks,
Nicky

Re: Varibles Spanning Multiple Dialogs

xxhimanshu12-Feb-03 17:40

xxhimanshu

12-Feb-03 17:40

hi,
you can't use a class thing like that..you need an object first..to use it..
you can use it like this..
CSlopeDlg dlg;
m_m = dlg.m_m;
thats it..you are done..
cheers

Himanshu

Re: Varibles Spanning Multiple Dialogs

NPL Solutions13-Feb-03 11:14

NPL Solutions

13-Feb-03 11:14

Hi,
Thank you very much, but now it says:

error C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class Ctring' (or there is no acceptable coversion)

How can I convert the double type variables to CString, or the CString variable to double?

Thanks,
Nicky

Re: Varibles Spanning Multiple Dialogs

xxhimanshu13-Feb-03 16:51

xxhimanshu

13-Feb-03 16:51

hi,
cant u make both of them of same type...i guess u have defined them as CString and other becomes double..in your calculations...once it is any type int float or double..you can type cast it and do the work...
i hope it helps..
cheers

Himanshu

Messages to other apps

Trollslayer12-Feb-03 13:03

Trollslayer

12-Feb-03 13:03

I want to autmat an application that is supplied as a .exe.
Can anyone suggest the best way to send message to simulate menu selections on that software ?
Thanks.

Elaine

The tigress is here Big Grin | :-D

Re: Messages to other apps

Chris Richardson12-Feb-03 17:32

Chris Richardson

12-Feb-03 17:32

The article below might help, I'm not sure:

http://www.codeproject.com/com/automatingwindowsapps.asp[^]

Good luck,

Chris Richardson

C/C++ Include Finder[^]

doModal() frustrations

davedoc12-Feb-03 12:46

davedoc

12-Feb-03 12:46

I have a dialog based application that has 2 dialogs in it. I display each of them using doModal() something like the following:

CEulaDlg eDlg;
CSetupDlg dlg;

INT_PTR nResponse = -1;

nResponse = eDlg.DoModal();
if( nResponse == IDCANCEL )
return false;

nResponse = dlg.DoModal();
if (nResponse == IDOK)
{ ...

I'm calling both AfxEnableControlContainer() and AfxInitRichEdit2() in both dialog constructors. The problem I'm having is that once I add the eDlg dialog when I run the app nothing happens. The app doesn't even appear in the process mgr after a few seconds.

There is one thing unusual, if I build it from the VS.NET GUI it runs fine. If I build it from the command line, it doesn't work.

Any ideas what I might be doing wrong?

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