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Fix WTInfoA in wintab.c so it can now take lpOutput == NULL, as per 

standard.
This commit is contained in:
Robert North 2004-10-21 19:53:02 +00:00 committed by Alexandre Julliard
parent 5d0366f5a0
commit e2bd6f36d0
1 changed files with 25 additions and 14 deletions
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39
dlls/x11drv/wintab.c
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@ -746,7 +746,12 @@ int X11DRV_GetCurrentPacket(LPWTPACKET *packet)
int static inline CopyTabletData(LPVOID target, LPVOID src, INT size)
{
memcpy(target,src,size);
/*
* It is valid to call CopyTabletData with NULL.
* This handles the WTInfo() case where lpOutput is null.
*/
if(target != NULL)
memcpy(target,src,size);
return(size);
}
@ -755,6 +760,14 @@ int static inline CopyTabletData(LPVOID target, LPVOID src, INT size)
*/
UINT X11DRV_WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
{
/*
* It is valid to call WTInfoA with lpOutput == NULL, as per standard.
* lpOutput == NULL signifies the user only wishes
* to find the size of the data.
* NOTE:
* From now on use CopyTabletData to fill lpOutput. memcpy will break
* the code.
*/
int rc = 0;
LPWTI_CURSORS_INFO tgtcursor;
TRACE("(%u, %u, %p)\n", wCategory, nIndex, lpOutput);
@ -799,9 +812,8 @@ UINT X11DRV_WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
switch (nIndex)
{
case 0:
memcpy(lpOutput, &gSysContext,
rc = CopyTabletData(lpOutput, &gSysContext,
sizeof(LOGCONTEXTA));
rc = sizeof(LOGCONTEXTA);
break;
case CTX_NAME:
rc = CopyTabletData(lpOutput, &gSysContext.lcName,
@ -988,8 +1000,8 @@ UINT X11DRV_WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
sizeof(BYTE)*32);
break;
case CSR_NPBTNMARKS:
memcpy(lpOutput,&tgtcursor->NPBTNMARKS,sizeof(UINT)*2);
rc = sizeof(UINT)*2;
rc = CopyTabletData(lpOutput,&tgtcursor->NPBTNMARKS,
sizeof(UINT)*2);
break;
case CSR_NPBUTTON:
rc = CopyTabletData(lpOutput,&tgtcursor->NPBUTTON,
@ -1004,8 +1016,8 @@ UINT X11DRV_WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
sizeof(BYTE));
break;
case CSR_TPBTNMARKS:
memcpy(lpOutput,&tgtcursor->TPBTNMARKS,sizeof(UINT)*2);
rc = sizeof(UINT)*2;
rc = CopyTabletData(lpOutput,&tgtcursor->TPBTNMARKS,
sizeof(UINT)*2);
break;
case CSR_TPRESPONSE:
FIXME("Not returning CSR_TPRESPONSE correctly\n");
@ -1014,10 +1026,9 @@ UINT X11DRV_WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
case CSR_PHYSID:
{
DWORD id;
rc = CopyTabletData(&id,&tgtcursor->PHYSID,
sizeof(DWORD));
id = tgtcursor->PHYSID;
id += (wCategory - WTI_CURSORS);
memcpy(lpOutput,&id,sizeof(DWORD));
rc = CopyTabletData(lpOutput,&id,sizeof(DWORD));
}
break;
case CSR_MODE:
@ -1121,14 +1132,14 @@ UINT X11DRV_WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
*/
break;
case DVC_ORIENTATION:
memcpy(lpOutput,&gSysDevice.ORIENTATION,sizeof(AXIS)*3);
rc = sizeof(AXIS)*3;
rc = CopyTabletData(lpOutput,&gSysDevice.ORIENTATION,
sizeof(AXIS)*3);
break;
case DVC_ROTATION:
rc = 0; /* unsupported */
/*
memcpy(lpOutput,&gSysDevice.ROTATION,sizeof(AXIS)*3);
rc = sizeof(AXIS)*3;
rc = CopyTabletData(lpOutput,&gSysDevice.ROTATION,
sizeof(AXIS)*3);
*/
break;
case DVC_PNPID: