C / C++ / MFC

21-Mar-09 0:45

Hi
I am looking for an easy way to create GUI for my application. User needs to draw dots on a plane with 3 available colours. The program will then remember the coordinates/position of these dots and let the user inpute few parameters for each dot.
This will be a GUI for a computer simulation program, an interface for setting parameters of that simulation.

Can anyone advise an easy, fast way to program it? I can write a code in Visual Studio or some other IDE.

Cedric Moonen21-Mar-09 1:04

Cedric Moonen

21-Mar-09 1:04

I think the easiest would be to create a MFC application and use GDI to draw the points (you can use CDC::Ellipse[^] for instance). But if you are completely new to MFC, I suggest you learn MFC from the start (using a book or online tutorial).

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

mass8521-Mar-09 1:27

21-Mar-09 1:27

I don't know anything about MFC, that's why I'd rather avoid learning it to save my time. I am looking for some control that can be used to draw shapes, but I can't find it. I know that there are such components in Java in Netbeans and now I'm looking for something similar.

Cedric Moonen21-Mar-09 2:11

Cedric Moonen

21-Mar-09 2:11

Member 4124956 wrote:
I am looking for some control that can be used to draw shapes

That's rather vague. What are you looking for exactly ?
Anyway, even if you find such a control you will still need to learn some basic stuff with MFC. You'll have that problem with whatever you will choose: a minimum knowledge of the framework you are using is always needed.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

mass8521-Mar-09 2:23

21-Mar-09 2:23

In Java I used a panel or sth (I can't remember terminology) which I could add to my window, and I could draw what I wanted in that panel. I could easilly check the color, position etc of everything what I painted just using the object properties, functions.

I will check what it exactly was.

mass8523-Mar-09 2:02

23-Mar-09 2:02

In Java we can use jPanel, jColorChooser and classes:
java.awt.Color
java.awt.Graphics
to obtain such a GUI. This function shows the simplicity of that solution:

private void jPanel1MousePressed(java.awt.event.MouseEvent evt) {                                     
        // TODO add your handling code here:
        int X = evt.getX();
        int Y = evt.getY();
        Graphics gr = jPanel1.getGraphics();
        gr.setColor(jColorChooser1.getColor());
        gr.fillOval(X, Y, 10, 10);
}

Is there anything similar in C++?

RemoveDirectoryW()

p_196021-Mar-09 0:39

21-Mar-09 0:39

Hi,
im using RemoveDirectoryW() ...the problem is..

RemoveDirectoryW(L"c:\\test\\testing");

the above deletes the folder testing but when....

the path to delete is present in two LPCWSTR"s then how can i add them ie...

LPCWSTR lpPath1=L"c:\\temp\\folder1\\";
LPCWSTR lpPath2=L"testing\\tester";

i need to pass the combination of the above to RemoveDirectoryW()(finally i should delete tester).....Please let me know how can i do this....

Michael Schubert21-Mar-09 1:17

Michael Schubert

21-Mar-09 1:17

Not sure what you're trying to do. Do you want to delete a directory that has sub-directories? Could you re-phrase your request a bit?

p_196021-Mar-09 1:27

21-Mar-09 1:27

Yes i will .....

I need to delete a folder named "Test" which is present in the folder TEMP(Environment variable)...

im able to get the path of TEMP using...

WCHAR buffer[1042]={'\0'};
DWORD size=1042;
::GetEnvironmentVariableW(L"TEMP",(LPWSTR)buffer,size);
CString csPath;
csPath=buffer;

im able to get the path of TEMP in csPath... now i have to delete the folder Test which is inside that TEMP folder....

When i use RemoveDirectoryW() i need to pass the path(in LPCWSTR) to Test folder....so please help me to attain this....

Michael Schubert21-Mar-09 1:39

Michael Schubert

21-Mar-09 1:39

See Dominik's reply below. You also have to consider that RemoveDirectory will only delete empty directories. You might consider using SHFileOperation, here's an example:
http://bobmoore.mvps.org/Win32/w32tip28.htm[^]

Dominik Reichl21-Mar-09 1:33

Dominik Reichl

21-Mar-09 1:33

To concatenate the two strings, you could use something like this:

LPCWSTR lpPath1=L"c:\\temp\\folder1\\";
LPCWSTR lpPath2=L"testing\\tester";

std::basic_string<WCHAR> strPath = lpPath1;
strPath += lpPath2;

RemoveDirectoryW(strPath.c_str());

This requires a #include <string>. Note that I'd recommend generic text mappings (with _T, etc.) instead of just using Unicode directly.

Too many passwords to remember? Try KeePass Password Safe!

p_196021-Mar-09 1:46

21-Mar-09 1:46

Thanks for ur support....

May i know how to achieve this if lpPath1 is a Cstring.....

Dominik Reichl21-Mar-09 1:53

Dominik Reichl

21-Mar-09 1:53

CString strPath1 = _T("c:\\temp\\folder1\\");
CString strPath2 = _T("testing\\tester");

CString strPath = strPath1 + strPath2;

RemoveDirectory(strPath);

Too many passwords to remember? Try KeePass Password Safe!

p_196021-Mar-09 2:04

21-Mar-09 2:04

Sorry i mean to say if only lpPath1 is Cstring and lpPath2 is LPCWSTR then how can i add them and pass to RemoveDirectoryW() Please let me know.....

Re: RemoveDirectoryW() [modified]

Dominik Reichl21-Mar-09 2:13

Dominik Reichl

21-Mar-09 2:13

If you're compiling in Unicode mode, it's basically just the same:

CString strPath1 = _T("c:\\temp\\folder1\\");
LPCWSTR lpPath2 = L"testing\\tester";

CString strPath = strPath1 + lpPath2;

RemoveDirectoryW(strPath);

Too many passwords to remember? Try KeePass Password Safe!

p_196021-Mar-09 3:23

21-Mar-09 3:23

Hi,
sorry it"s deleting thanks.....

modified on Saturday, March 21, 2009 9:59 AM

GetEnvironmentvariables

siva45520-Mar-09 23:48

siva455

20-Mar-09 23:48

Hi,

How can i get the value of Environment variables(user variables)..thru a sample ....

Please help me out....

Stuart Dootson21-Mar-09 0:18

Stuart Dootson

21-Mar-09 0:18

TCHAR varValue[32767];
GetEnvironmentVariable(_T("PATH"), varValue, 32767);<pre>

<code>varValue</code> will (after the call) contain the path for your account. 

<div class="ForumSig">Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p</div>

p_196021-Mar-09 2:10

21-Mar-09 2:10

Thanks for ur reply...suppose using this...

TCHAR varValue[32767];
GetEnvironmentVariable(_T("TEMP"), varValue, 32767);

if get the path of TEMP in varValue...how can i create a folder named "Testing" under that TEMP folder...using CreateDirectoryW()

JBAK_CP21-Mar-09 4:56

JBAK_CP

21-Mar-09 4:56

Here is another way to do it...

//Get the env variable
	CString directory = "";
        directory = getenv ( "ProgramFiles");

//Create a new folder underneath the program files directory
	CString newDirectory(directory + "\\EnvFolder" );
	BOOL createDirEnv = CreateDirectory(newDirectory, NULL);