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[NTVDM]: Studying ntvdm, we can find the significance of some of the parameters. Others seem unused.

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svn path=/trunk/; revision=63848
This commit is contained in:
Hermès Bélusca-Maïto
2014-08-09 18:48:31 +00:00
parent de7b63edc1
commit a56fcb9ae3
1 changed files with 20 additions and 20 deletions
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reactos/subsystems/ntvdm/hardware/vga.c
+20 -20
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@@ -23,7 +23,7 @@ static CONST DWORD MemoryLimit[] = { 0xAFFFF, 0xAFFFF, 0xB7FFF, 0xBFFFF };
/*
* Activate this line if you want to use the real
* RegisterConsoleVDM API of Windows/ReactOS.
* RegisterConsoleVDM API of ReactOS/Windows.
*/
// #define USE_REAL_REGISTERCONSOLEVDM
@@ -314,33 +314,33 @@ static PCHAR_INFO CharBuff = NULL; // This is a hack, which is unneeded
BOOL
WINAPI
__RegisterConsoleVDM(IN DWORD dwDosVDMFlag,
IN HANDLE hEventHandle1,
IN HANDLE hEventHandle2,
IN HANDLE hEventHandle3,
IN DWORD Unused1,
OUT PULONG returned_val_1,
OUT PVOID* returned_val_2,
IN PVOID lpUnknownBuffer,
IN DWORD dwUnknownBufferLength,
__RegisterConsoleVDM(IN DWORD dwRegisterFlags,
IN HANDLE hStartHardwareEvent,
IN HANDLE hEndHardwareEvent,
IN HANDLE hErrorHardwareEvent,
IN DWORD dwUnusedVar,
OUT LPDWORD lpVideoStateLength,
OUT PVOID* lpVideoState, // PVIDEO_HARDWARE_STATE_HEADER*
IN PVOID lpUnusedBuffer,
IN DWORD dwUnusedBufferLength,
IN COORD dwVDMBufferSize,
OUT PVOID* lpVDMBuffer)
{
UNREFERENCED_PARAMETER(hEventHandle3);
UNREFERENCED_PARAMETER(Unused1);
UNREFERENCED_PARAMETER(returned_val_1);
UNREFERENCED_PARAMETER(returned_val_2);
UNREFERENCED_PARAMETER(lpUnknownBuffer);
UNREFERENCED_PARAMETER(dwUnknownBufferLength);
UNREFERENCED_PARAMETER(hErrorHardwareEvent);
UNREFERENCED_PARAMETER(dwUnusedVar);
UNREFERENCED_PARAMETER(lpVideoStateLength);
UNREFERENCED_PARAMETER(lpVideoState);
UNREFERENCED_PARAMETER(lpUnusedBuffer);
UNREFERENCED_PARAMETER(dwUnusedBufferLength);
SetLastError(0);
DPRINT1("__RegisterConsoleVDM(%d)\n", dwDosVDMFlag);
DPRINT1("__RegisterConsoleVDM(%d)\n", dwRegisterFlags);
if (lpVDMBuffer == NULL) return FALSE;
if (dwDosVDMFlag != 0)
if (dwRegisterFlags != 0)
{
// if (EventHandle_1 == NULL || EventHandle_2 == NULL) return FALSE;
// if (hStartHardwareEvent == NULL || hEndHardwareEvent == NULL) return FALSE;
if (VDMBuffer != NULL) return FALSE;
VDMBufferSize = dwVDMBufferSize;
@@ -451,7 +451,7 @@ static BOOL VgaAttachToConsoleInternal(PCOORD Resolution)
/*
* Windows 2k3 winsrv.dll calls NtVdmControl(VdmQueryVdmProcess == 14, &ConsoleHandle);
* in the two following APIs:
* SrvRegisterConsoleVDM (corresponding win32 API: RegisterConsoleVDM)
* SrvRegisterConsoleVDM (corresponding Win32 API: RegisterConsoleVDM)
* SrvVDMConsoleOperation (corresponding Win32 API: )
* to check whether the current process is a VDM process, and fails otherwise with the
* error 0xC0000022 ().