conoutput.h File Reference

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Macros
#define	ConSrvGetTextModeBuffer(ProcessData, Handle, Ptr, Access, LockConsole)
#define	ConSrvGetTextModeBufferAndHandleEntry(ProcessData, Handle, Ptr, Entry, Access, LockConsole)
#define	ConSrvGetGraphicsBuffer(ProcessData, Handle, Ptr, Access, LockConsole)
#define	ConSrvGetGraphicsBufferAndHandleEntry(ProcessData, Handle, Ptr, Entry, Access, LockConsole)
#define	ConSrvGetScreenBuffer(ProcessData, Handle, Ptr, Access, LockConsole)
#define	ConSrvGetScreenBufferAndHandleEntry(ProcessData, Handle, Ptr, Entry, Access, LockConsole)
#define	ConSrvReleaseScreenBuffer(Buff, IsConsoleLocked)    ConSrvReleaseObject(&(Buff)->Header, (IsConsoleLocked))

Functions
NTSTATUS	ConDrvCreateScreenBuffer (OUT PCONSOLE_SCREEN_BUFFER *Buffer, IN PCONSOLE Console, IN HANDLE ProcessHandle OPTIONAL, IN ULONG BufferType, IN PVOID ScreenBufferInfo)
VOID NTAPI	ConDrvDeleteScreenBuffer (PCONSOLE_SCREEN_BUFFER Buffer)
PCONSOLE_SCREEN_BUFFER	ConDrvGetActiveScreenBuffer (IN PCONSOLE Console)

Macro Definition Documentation

ConSrvGetGraphicsBuffer

#define ConSrvGetGraphicsBuffer	(		ProcessData,
			Handle,
			Ptr,
			Access,
			LockConsole
	)

Value:

    ConSrvGetObject((ProcessData), (Handle), (PCONSOLE_IO_OBJECT*)(Ptr), NULL,  \
                    (Access), (LockConsole), GRAPHICS_BUFFER)

Definition at line 19 of file conoutput.h.

ConSrvGetGraphicsBufferAndHandleEntry

#define ConSrvGetGraphicsBufferAndHandleEntry	(		ProcessData,
			Handle,
			Ptr,
			Entry,
			Access,
			LockConsole
	)

Value:

    ConSrvGetObject((ProcessData), (Handle), (PCONSOLE_IO_OBJECT*)(Ptr), (Entry),                   \
                    (Access), (LockConsole), GRAPHICS_BUFFER)

Definition at line 22 of file conoutput.h.

ConSrvGetScreenBuffer

#define ConSrvGetScreenBuffer	(		ProcessData,
			Handle,
			Ptr,
			Access,
			LockConsole
	)

Value:

    ConSrvGetObject((ProcessData), (Handle), (PCONSOLE_IO_OBJECT*)(Ptr), NULL,  \
                    (Access), (LockConsole), SCREEN_BUFFER)

Definition at line 26 of file conoutput.h.

ConSrvGetScreenBufferAndHandleEntry

#define ConSrvGetScreenBufferAndHandleEntry	(		ProcessData,
			Handle,
			Ptr,
			Entry,
			Access,
			LockConsole
	)

Value:

    ConSrvGetObject((ProcessData), (Handle), (PCONSOLE_IO_OBJECT*)(Ptr), (Entry),                   \
                    (Access), (LockConsole), SCREEN_BUFFER)

Definition at line 29 of file conoutput.h.

ConSrvGetTextModeBuffer

#define ConSrvGetTextModeBuffer	(		ProcessData,
			Handle,
			Ptr,
			Access,
			LockConsole
	)

Value:

    ConSrvGetObject((ProcessData), (Handle), (PCONSOLE_IO_OBJECT*)(Ptr), NULL,  \
                    (Access), (LockConsole), TEXTMODE_BUFFER)

Definition at line 12 of file conoutput.h.

ConSrvGetTextModeBufferAndHandleEntry

#define ConSrvGetTextModeBufferAndHandleEntry	(		ProcessData,
			Handle,
			Ptr,
			Entry,
			Access,
			LockConsole
	)

Value:

    ConSrvGetObject((ProcessData), (Handle), (PCONSOLE_IO_OBJECT*)(Ptr), (Entry),                   \
                    (Access), (LockConsole), TEXTMODE_BUFFER)

Definition at line 15 of file conoutput.h.

ConSrvReleaseScreenBuffer

#define ConSrvReleaseScreenBuffer	(		Buff,
			IsConsoleLocked
	)		ConSrvReleaseObject(&(Buff)->Header, (IsConsoleLocked))

Definition at line 33 of file conoutput.h.

Function Documentation

ConDrvCreateScreenBuffer()

NTSTATUS ConDrvCreateScreenBuffer	(	OUT PCONSOLE_SCREEN_BUFFER *	Buffer,
		IN PCONSOLE	Console,
		IN HANDLE ProcessHandle	OPTIONAL,
		IN ULONG	BufferType,
		IN PVOID	ScreenBufferInfo
	)

Definition at line 85 of file conoutput.c.

{
    NTSTATUS Status = STATUS_UNSUCCESSFUL;
 
    if ( Console == NULL || Buffer == NULL ||
        (BufferType != CONSOLE_TEXTMODE_BUFFER && BufferType != CONSOLE_GRAPHICS_BUFFER) )
    {
        return STATUS_INVALID_PARAMETER;
    }
 
    /* Use the current process if ProcessHandle is NULL */
    if (ProcessHandle == NULL)
        ProcessHandle = NtCurrentProcess();
 
    switch (BufferType)
    {
    case CONSOLE_TEXTMODE_BUFFER:
        Status = TEXTMODE_BUFFER_Initialize(Buffer, Console, ProcessHandle,
                                            (PTEXTMODE_BUFFER_INFO)ScreenBufferInfo);
        break;
 
    case CONSOLE_GRAPHICS_BUFFER:
        Status = GRAPHICS_BUFFER_Initialize(Buffer, Console, ProcessHandle,
                                            (PGRAPHICS_BUFFER_INFO)ScreenBufferInfo);
        break;
 
    default:
        /* Never ever go there!! */
        ASSERT(FALSE);
    }
 
    /* Insert the newly created screen buffer into the list, if succeeded */
    if (NT_SUCCESS(Status)) InsertHeadList(&Console->BufferList, &(*Buffer)->ListEntry);
 
    return Status;
}

Referenced by CON_API(), and ConDrvInitConsole().

ConDrvDeleteScreenBuffer()

VOID NTAPI ConDrvDeleteScreenBuffer

(

PCONSOLE_SCREEN_BUFFER

Buffer

)

Definition at line 130 of file conoutput.c.

{
    PCONSOLE Console = Buffer->Header.Console;
    PCONSOLE_SCREEN_BUFFER NewBuffer;
 
    /*
     * We should notify temporarily the frontend because we are susceptible
     * to delete the screen buffer it is using (which may be different from
     * the active screen buffer in some cases), and because, if it actually
     * uses the active screen buffer, we are going to nullify its pointer to
     * change it.
     */
    TermReleaseScreenBuffer(Console, Buffer);
 
    RemoveEntryList(&Buffer->ListEntry);
    if (Buffer == Console->ActiveBuffer)
    {
        /* Delete active buffer; switch to most recently created */
        if (!IsListEmpty(&Console->BufferList))
        {
            NewBuffer = CONTAINING_RECORD(Console->BufferList.Flink,
                                          CONSOLE_SCREEN_BUFFER,
                                          ListEntry);
 
            /* Tie console to new buffer and signal the change to the frontend */
            ConioSetActiveScreenBuffer(NewBuffer);
        }
        else
        {
            Console->ActiveBuffer = NULL;
            // InterlockedExchangePointer(&Console->ActiveBuffer, NULL);
        }
    }
 
    CONSOLE_SCREEN_BUFFER_Destroy(Buffer);
}

Referenced by CON_API(), ConDrvDeleteConsole(), ConDrvSetConsoleActiveScreenBuffer(), and ConSrvCloseHandle().

ConDrvGetActiveScreenBuffer()

PCONSOLE_SCREEN_BUFFER ConDrvGetActiveScreenBuffer

(

IN PCONSOLE

Console

)

Definition at line 201 of file conoutput.c.

{
    return (Console ? Console->ActiveBuffer : NULL);
}

Referenced by GuiSetActiveScreenBuffer().