Making a CWnd transparent - C / C++ / MFC Discussion Boards

Re: OnSize() problem in Maximize

Eugen Podsypalnikov18-Mar-10 1:17

Eugen Podsypalnikov

18-Mar-10 1:17

Please test it:

BEGIN_MESSAGE_MAP(CYourWnd, CBaseOfYouWnd)
  //{{AFX_MSG_MAP(CYourWnd)
...
  ON_WM_GETMINMAXINFO()
  //}}AFX_MSG_MAP
END_MESSAGE_MAP()
 
void CYourWnd::OnGetMinMaxInfo(MINMAXINFO* lpMMI)
{
  lpMMI->ptMaxTrackSize.x = 400;
  lpMMI->ptMaxTrackSize.y = 200;
}

virtual void BeHappy() = 0;

Re: OnSize() problem in Maximize

Anu_Bala18-Mar-10 1:34

Anu_Bala

18-Mar-10 1:34

Actually i tried that.But wat happen is the X,Y positon of window is getting 0,0.But i want X=0,Y=60.
Because above 60,i have one dialog.Its always visible.So i made this child window below that dialog.
For this functionality i want this feature.

Anu

Re: OnSize() problem in Maximize

Eugen Podsypalnikov18-Mar-10 1:25

Eugen Podsypalnikov

18-Mar-10 1:25

Try also to change your reaction to Smile | :)

void CChildFrame::OnSize(UINT nType, int cx, int cy)
{
  CMDIChildWnd::OnSize(nType, cx, cy);
  switch (nType) {
    case SIZE_MAXIMIZED: {
        MDIRestore();
        int XBorder = GetSystemMetrics(SM_CXMAXIMIZED);
        int YBorder = GetSystemMetrics(SM_CYMAXIMIZED);
        SetWindowPos(NULL,0,60,XBorder-45,YBorder-60,SWP_NOZORDER );
    }
    break;
  }
}

virtual void BeHappy() = 0;

Re: OnSize() problem in Maximize

Anu_Bala18-Mar-10 1:36

Anu_Bala

18-Mar-10 1:36

The window get maximized to full screen size.

Anu

button in one subitem for CListCtrl?

sairamdp18-Mar-10 0:01

sairamdp

18-Mar-10 0:01

Does anybody know how to display button in one subitem for CListCtrl?

Re: button in one subitem for CListCtrl?

Eugen Podsypalnikov18-Mar-10 0:12

Eugen Podsypalnikov

18-Mar-10 0:12

You could try to create a child button
(may be for each entry, stored in the item data as pointer)

at position (-1, -1, -1, -1)
and move it in the controls reaction on NM_CUSTOMDRAW Smile | :)

virtual void BeHappy() = 0;

Re: button in one subitem for CListCtrl? [modified]

mesajflaviu18-Mar-10 19:53

mesajflaviu

18-Mar-10 19:53

Have you try CListCtrlEx class ? Pay attention of this class and see how implement a radio button dialog of some column , in that way can you put there a button dialog !

modified on Monday, March 22, 2010 2:59 AM

Making a CWnd transparent

Member 471222117-Mar-10 23:52

Member 4712221

17-Mar-10 23:52

Hi,

I'm creating a CWnd object on Top of CDialog object. I want to make that CWnd transparent and used following code. But that wasn't work. When this code used in the parent dialog both dialog and CWnd got the transparent effect.

HMODULE hUserDll = ::LoadLibrary(_T("USER32.dll"));
::SetWindowLong(m_hWnd, GWL_EXSTYLE, ::GetWindowLong(m_hWnd, GWL_EXSTYLE) | WS_EX_LAYERED );
::SetLayeredWindowAttributes(m_hWnd, 0, (255 * 70)/100, LWA_COLORKEY|LWA_ALPHA);

Please any one can explain why?

Re: Making a CWnd transparent

Eugen Podsypalnikov18-Mar-10 0:01

Eugen Podsypalnikov

18-Mar-10 0:01

A layered window may not be a child (WS_CHILD)... Smile | :)

virtual void BeHappy() = 0;

Re: Making a CWnd transparent

Member 471222118-Mar-10 0:58

Member 4712221

18-Mar-10 0:58

Thank you. Smile | :)

client - Server Connection problem

Game-point17-Mar-10 23:40

Game-point

17-Mar-10 23:40

Hello Sir

Currently i am doing one client - server program,

when i connect client - server its shows error code 10049

server code :

WSADATA wsadata;

	DWORD version = MAKEWORD (2,2);

	int Result , Error_Code;

	CString Error_Result;

	Result = WSAStartup( version,&wsadata);

	if ( Result != 0 )
	{
		Error_Code = WSAGetLastError();

		Error_Result.Format ("%d",Error_Code) ;

		MessageBox ( " Socket Opration Failed :"+Error_Result )	;
	}
	else
	{
		// Socket Creation

		SOCKET server_Socket;

		if ( (server_Socket = socket ( AF_INET,SOCK_STREAM,IPPROTO_TCP) )== SOCKET_ERROR )
		{

			Error_Code = WSAGetLastError();

			Error_Result.Format ("%d",Error_Code );

			MessageBox ("Server Socket Creation is Failed : "+Error_Result);
		}

		else
		{
			
			// Initialize Server Socket Structure

			SOCKADDR_IN serverStructure;

			int Port = 808;

			serverStructure.sin_family = AF_INET;

			serverStructure.sin_port = htonl (Port);
			
			serverStructure.sin_addr.S_un.S_addr = htonl(ADDR_ANY) ;

			// Bind the Server Socket

			Result = bind ( server_Socket,(SOCKADDR*)&serverStructure,sizeof(serverStructure));

			if ( Result==0 )
			{
			
				Result = listen(server_Socket,5);

				if (Result!=0)
				{
				
					Error_Result.Format ("%d",WSAGetLastError());

					MessageBox("Socket listen is Failed :"+Error_Result);
				}
				else
				{
					// Create New Socket

					SOCKET ClientSocket;

					if ( (ClientSocket = accept (server_Socket,NULL,NULL) ) ==INVALID_SOCKET )
					{
						Error_Result.Format ("%d",WSAGetLastError());

						MessageBox ("Socket Accept is Failed :"+Error_Result);
					}

client code:

	WSADATA wsadata;

	int Result_Client;

	CString strClient_Result;

	DWORD version = MAKEWORD (2,2);

	Result_Client = WSAStartup( version,&wsadata);

	if (Result_Client==0 )
	{
	
		// Create Client Socket
		
		SOCKET ClientSocket;

		if ( (ClientSocket = socket (AF_INET,SOCK_STREAM,IPPROTO_TCP)) != INVALID_SOCKET)
		{
		
			// Initialize Client Socket structure

			int Port = 808;

			SOCKADDR_IN ClientSocketStructure;

			ClientSocketStructure.sin_family = AF_INET;

			ClientSocketStructure.sin_port = htonl(Port);

			ClientSocketStructure.sin_addr.S_un.S_addr =inet_addr("192.168.1.21") ;

			Result_Client = <code>connect(ClientSocket,(SOCKADDR*)&ClientSocketStructure,sizeof(ClientSocketStructure));
</code>
			if ( Result_Client == 0)
			{
			
				char* SendMessage_Server = "Test";

				send(ClientSocket,SendMessage_Server,sizeof (SendMessage_Server),NULL);

				closesocket(ClientSocket);

				WSACleanup();

			}
			else
			{
				strClient_Result.Format ("%d",WSAGetLastError());
				MessageBox ("Client: Sever Socket Connection is failed "+strClient_Result)	; // Showing Error
			}

Failure is Success If we learn from it!!

Re: client - Server Connection problem

Moak18-Mar-10 1:07

Moak

18-Mar-10 1:07

Game-point wrote:
when i connect client - server its shows error code 10049

Exactly where in the code? Please tell where the program fails.

If you are new to network programming it is always good to start with working examples. Have a look at Beej's guide to networking programming[^] and Winsock Programmer's FAQ[^], there are client/server examples in section 6.

Webchat in Europe Java | [Coffee]

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localization problem

Member 59031017-Mar-10 23:10

Member 590310

17-Mar-10 23:10

hi,
i have a multibyte application which i m making multilingual.the resource file is unicode.when i load the resources from string table of dll it shows ???? characters instead of japanese strings.wat may be the prblm?

Re: localization problem

Eugen Podsypalnikov17-Mar-10 23:27

Eugen Podsypalnikov

17-Mar-10 23:27

The application and its used font should be Unicode-ready Smile | :)

virtual void BeHappy() = 0;

Re: localization problem

Member 59031017-Mar-10 23:31

Member 590310

17-Mar-10 23:31

no its necessary to keep the application multibyte.but resource file is unicode.can anyone give some solution?

Re: localization problem

Avi Berger17-Mar-10 23:34

Avi Berger

17-Mar-10 23:34

Member 590310 wrote:
wat may be the prblm?

The answer:

Member 590310 wrote:
multibyte application ... the resource file is unicode.

Either make the application unicode ( my recommendation), make the resources multibyte, or code the program to transform the unicode resources to multibyte before using them. Also, if you are going to be using multibyte, check that you are using the correct code page for your situation.

Please do not read this signature.

Re: localization problem

Abhi Lahare18-Mar-10 4:52

Abhi Lahare

18-Mar-10 4:52

assuming that you converted your code to unicode, try using "ms gothic" font for dialog boxes which are using Japanese strings

HTH

Blobk Key

john563217-Mar-10 22:54

john5632

17-Mar-10 22:54

Hi,

While running my application how can I keep track on any key event so that key logger should not get to know about pressed key?

Re: Blobk Key

CPallini17-Mar-10 22:58

CPallini

17-Mar-10 22:58

I suppose your application cannot prevent a keyboard hook to do its job, if that was the question.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: Blobk Key

john563217-Mar-10 23:05

john5632

17-Mar-10 23:05

then how to do?

Re: Blobk Key

CPallini17-Mar-10 23:08

CPallini

17-Mar-10 23:08

It really depends on your application. You may for instance, avoid keystrokes providing a virtual keyboard (graphical representation of keys, mouse activated).
Smile | :)

Re: Blobk Key

Adam Roderick J17-Mar-10 23:27

Adam Roderick J

17-Mar-10 23:27

If you want to keep track of the key events, then i suppose, your application wants to know whether any one is hooking the keyboard events.
Then surely it may be using SetWindowHookEx([^]) to achieve the goal of a key logger.

To find the Key logger, you can use the technique of API hooking to monitor any process doing something with a specified API.
Hook that API(API Hooking (LoadLibrary)[^]). I believe if you hook SetWindowHookEx API then you can monitor whether some one there for KeyBoard hooking.
A little bit complex, All the best, have a try Smile | :)

Величие не Бога может быть недооценена.

How do I get the notification when the user modifies the DNS server address?

EverettJF17-Mar-10 20:11

EverettJF

17-Mar-10 20:11

I could user ip helper api (NotifyAddrChange and NotifyRouteChange) to get the notification when the user changes the IP address,subnet mask ,
but when the dns server address( main and the other) is modified , I could not get notification.
Is there any method ?
Thanks!

how to draw a sector of a circle?

tho_mee17-Mar-10 13:55

tho_mee

17-Mar-10 13:55

the three points ( center, start of arc ,end of arc) and the angle are known to me. I need to draw whenever these values are given. I saw CPie but for that you need to know the rect.

Re: how to draw a sector of a circle?

Avi Berger17-Mar-10 15:23

Avi Berger

17-Mar-10 15:23

I would imagine that you have enough information to calculate the bounding rectangle.

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