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get CursorBlinkRate from registry

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svn path=/trunk/; revision=6751
This commit is contained in:
Thomas Bluemel 2003-11-22 11:49:09 +00:00
parent aadb87f5d7
commit 6c6afa3794
2 changed files with 133 additions and 3 deletions
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1
reactos/ntoskrnl/include/internal/ex.h
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@ -58,6 +58,7 @@ typedef struct _WINSTATION_OBJECT
PVOID HandleTable;
HANDLE SystemMenuTemplate;
SYSTEM_CURSORINFO SystemCursor;
UINT CaretBlinkRate;
struct _DESKTOP_OBJECT* ActiveDesktop;
/* FIXME: Clipboard */
LIST_ENTRY HotKeyListHead;

135
reactos/subsys/win32k/ntuser/caret.c
View file

@ -1,4 +1,4 @@
/* $Id: caret.c,v 1.6 2003/11/22 05:06:18 rcampbell Exp $
/* $Id: caret.c,v 1.7 2003/11/22 11:49:09 weiden Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -10,16 +10,24 @@
*/
#include <win32k/win32k.h>
#include <ddk/ntddk.h>
#include <internal/safe.h>
#include <include/error.h>
#include <include/window.h>
#include <include/caret.h>
#include <include/timer.h>
#include <include/callback.h>
#include <rosrtl/string.h>
#define NDEBUG
#include <debug.h>
#define MIN_CARETBLINKRATE 100
#define MAX_CARETBLINKRATE 10000
#define DEFAULT_CARETBLINKRATE 530
#define CARET_REGKEY L"\\Registry\\User\\.Default\\Control Panel\\Desktop"
#define CARET_VALUENAME L"CursorBlinkRate"
BOOL FASTCALL
IntHideCaret(PTHRDCARETINFO CaretInfo)
{
@ -44,13 +52,134 @@ IntDestroyCaret(PW32THREAD Win32Thread)
BOOL FASTCALL
IntSetCaretBlinkTime(UINT uMSeconds)
{
return FALSE;
/* Don't save the new value to the registry! */
NTSTATUS Status;
PWINSTATION_OBJECT WinStaObject;
Status = ValidateWindowStationHandle(PROCESS_WINDOW_STATION(),
KernelMode,
0,
&WinStaObject);
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
return FALSE;
}
/* windows doesn't do this check */
if((uMSeconds < MIN_CARETBLINKRATE) || (uMSeconds > MAX_CARETBLINKRATE))
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
ObDereferenceObject(WinStaObject);
return FALSE;
}
WinStaObject->CaretBlinkRate = uMSeconds;
ObDereferenceObject(WinStaObject);
return TRUE;
}
#define CARET_VALUE_BUFFER_SIZE 32
UINT FASTCALL
IntQueryCaretBlinkRate(VOID)
{
UNICODE_STRING KeyName, ValueName;
NTSTATUS Status;
HANDLE KeyHandle = NULL;
OBJECT_ATTRIBUTES KeyAttributes;
PKEY_VALUE_PARTIAL_INFORMATION KeyValuePartialInfo;
ULONG Length = 0;
ULONG ResLength = 0;
ULONG Val = 0;
RtlRosInitUnicodeStringFromLiteral(&KeyName, CARET_REGKEY);
RtlRosInitUnicodeStringFromLiteral(&ValueName, CARET_VALUENAME);
InitializeObjectAttributes(&KeyAttributes, &KeyName, OBJ_CASE_INSENSITIVE,
NULL, NULL);
Status = ZwOpenKey(&KeyHandle, KEY_READ, &KeyAttributes);
if(!NT_SUCCESS(Status))
{
return 0;
}
Status = ZwQueryValueKey(KeyHandle, &ValueName, KeyValuePartialInformation,
0, 0, &ResLength);
if((Status != STATUS_BUFFER_TOO_SMALL))
{
NtClose(KeyHandle);
return 0;
}
ResLength += sizeof(KEY_VALUE_PARTIAL_INFORMATION);
KeyValuePartialInfo = ExAllocatePool(PagedPool, ResLength);
Length = ResLength;
if(!KeyValuePartialInfo)
{
NtClose(KeyHandle);
return 0;
}
Status = ZwQueryValueKey(KeyHandle, &ValueName, KeyValuePartialInformation,
(PVOID)KeyValuePartialInfo, Length, &ResLength);
if(!NT_SUCCESS(Status) || (KeyValuePartialInfo->Type != REG_SZ))
{
NtClose(KeyHandle);
ExFreePool(KeyValuePartialInfo);
return 0;
}
ValueName.Length = KeyValuePartialInfo->DataLength;
ValueName.MaximumLength = KeyValuePartialInfo->DataLength;
ValueName.Buffer = (PWSTR)KeyValuePartialInfo->Data;
Status = RtlUnicodeStringToInteger(&ValueName, 0, &Val);
if(!NT_SUCCESS(Status))
{
Val = 0;
}
ExFreePool(KeyValuePartialInfo);
NtClose(KeyHandle);
return (UINT)Val;
}
UINT FASTCALL
IntGetCaretBlinkTime(VOID)
{
return 500;
NTSTATUS Status;
PWINSTATION_OBJECT WinStaObject;
UINT Ret;
Status = ValidateWindowStationHandle(PROCESS_WINDOW_STATION(),
KernelMode,
0,
&WinStaObject);
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
return 0;
}
Ret = WinStaObject->CaretBlinkRate;
if(!Ret)
{
/* load it from the registry the first call only! */
Ret = WinStaObject->CaretBlinkRate = IntQueryCaretBlinkRate();
}
/* windows doesn't do this check */
if((Ret < MIN_CARETBLINKRATE) || (Ret > MAX_CARETBLINKRATE))
{
Ret = DEFAULT_CARETBLINKRATE;
}
ObDereferenceObject(WinStaObject);
return Ret;
}
BOOL FASTCALL