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winspool: Implement EnumMonitorsA on top of EnumMonitorsW.

This commit is contained in:
Detlef Riekenberg 2006-03-31 14:32:02 +02:00 committed by Alexandre Julliard
parent 4b00805268
commit 603f13e2a0
1 changed files with 119 additions and 3 deletions
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122
dlls/winspool/info.c
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@ -5136,10 +5136,126 @@ BOOL WINAPI EnumFormsW( HANDLE hPrinter, DWORD Level, LPBYTE pForm,
BOOL WINAPI EnumMonitorsA(LPSTR pName, DWORD Level, LPBYTE pMonitors,
DWORD cbBuf, LPDWORD pcbNeeded, LPDWORD pcReturned)
{
FIXME("%s,%ld,%p,%ld,%p,%p\n", debugstr_a(pName), Level, pMonitors,
BOOL res;
LPBYTE bufferW = NULL;
LPWSTR nameW = NULL;
DWORD needed = 0;
DWORD numentries = 0;
INT len;
TRACE("(%s, %ld, %p, %ld, %p, %p)\n", debugstr_a(pName), Level, pMonitors,
cbBuf, pcbNeeded, pcReturned);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return 0;
/* convert servername to unicode */
if (pName) {
len = MultiByteToWideChar(CP_ACP, 0, pName, -1, NULL, 0);
nameW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
MultiByteToWideChar(CP_ACP, 0, pName, -1, nameW, len);
}
/* alloc (userbuffersize*sizeof(WCHAR) and try to enum the monitors */
needed = cbBuf * sizeof(WCHAR);
if (needed) bufferW = HeapAlloc(GetProcessHeap(), 0, needed);
res = EnumMonitorsW(nameW, Level, bufferW, needed, pcbNeeded, pcReturned);
if(!res && (GetLastError() == ERROR_INSUFFICIENT_BUFFER)) {
if (pcbNeeded) needed = *pcbNeeded;
/* HeapReAlloc return NULL, when bufferW was NULL */
bufferW = (bufferW) ? HeapReAlloc(GetProcessHeap(), 0, bufferW, needed) :
HeapAlloc(GetProcessHeap(), 0, needed);
/* Try again with the large Buffer */
res = EnumMonitorsW(nameW, Level, bufferW, needed, pcbNeeded, pcReturned);
}
numentries = pcReturned ? *pcReturned : 0;
needed = 0;
/*
W2k require the buffersize from EnumMonitorsW also for EnumMonitorsA.
We use the smaller Ansi-Size to avoid conflicts with fixed Buffers of old Apps.
*/
if (res) {
/* EnumMonitorsW collected all Data. Parse them to caclulate ANSI-Size */
DWORD entrysize = 0;
DWORD index;
LPSTR ptr;
LPMONITOR_INFO_2W mi2w;
LPMONITOR_INFO_2A mi2a;
/* MONITOR_INFO_*W and MONITOR_INFO_*A have the same size */
entrysize = (Level == 1) ? sizeof(MONITOR_INFO_1A) : sizeof(MONITOR_INFO_2A);
/* First pass: calculate the size for all Entries */
mi2w = (LPMONITOR_INFO_2W) bufferW;
mi2a = (LPMONITOR_INFO_2A) pMonitors;
index = 0;
while (index < numentries) {
index++;
needed += entrysize; /* MONITOR_INFO_?A */
TRACE("%p: parsing #%ld (%s)\n", mi2w, index, debugstr_w(mi2w->pName));
needed += WideCharToMultiByte(CP_ACP, 0, mi2w->pName, -1,
NULL, 0, NULL, NULL);
if (Level > 1) {
needed += WideCharToMultiByte(CP_ACP, 0, mi2w->pEnvironment, -1,
NULL, 0, NULL, NULL);
needed += WideCharToMultiByte(CP_ACP, 0, mi2w->pDLLName, -1,
NULL, 0, NULL, NULL);
}
/* use LPBYTE with entrysize to avoid double code (MONITOR_INFO_1 + MONITOR_INFO_2) */
mi2w = (LPMONITOR_INFO_2W) (((LPBYTE)mi2w) + entrysize);
mi2a = (LPMONITOR_INFO_2A) (((LPBYTE)mi2a) + entrysize);
}
/* check for errors and quit on failure */
if (cbBuf < needed) {
SetLastError(ERROR_INSUFFICIENT_BUFFER);
res = FALSE;
goto emA_cleanup;
}
len = entrysize * numentries; /* room for all MONITOR_INFO_?A */
ptr = (LPSTR) &pMonitors[len]; /* room for strings */
cbBuf -= len ; /* free Bytes in the user-Buffer */
mi2w = (LPMONITOR_INFO_2W) bufferW;
mi2a = (LPMONITOR_INFO_2A) pMonitors;
index = 0;
/* Second Pass: Fill the User Buffer (if we have one) */
while ((index < numentries) && pMonitors) {
index++;
TRACE("%p: writing MONITOR_INFO_%ldA #%ld\n", mi2a, Level, index);
mi2a->pName = ptr;
len = WideCharToMultiByte(CP_ACP, 0, mi2w->pName, -1,
ptr, cbBuf , NULL, NULL);
ptr += len;
cbBuf -= len;
if (Level > 1) {
mi2a->pEnvironment = ptr;
len = WideCharToMultiByte(CP_ACP, 0, mi2w->pEnvironment, -1,
ptr, cbBuf, NULL, NULL);
ptr += len;
cbBuf -= len;
mi2a->pDLLName = ptr;
len = WideCharToMultiByte(CP_ACP, 0, mi2w->pDLLName, -1,
ptr, cbBuf, NULL, NULL);
ptr += len;
cbBuf -= len;
}
/* use LPBYTE with entrysize to avoid double code (MONITOR_INFO_1 + MONITOR_INFO_2) */
mi2w = (LPMONITOR_INFO_2W) (((LPBYTE)mi2w) + entrysize);
mi2a = (LPMONITOR_INFO_2A) (((LPBYTE)mi2a) + entrysize);
}
}
emA_cleanup:
if (pcbNeeded) *pcbNeeded = needed;
if (pcReturned) *pcReturned = (res) ? numentries : 0;
HeapFree(GetProcessHeap(), 0, nameW);
HeapFree(GetProcessHeap(), 0, bufferW);
TRACE("returning %d with %ld (%ld byte for %ld entries)\n",
(res), GetLastError(), needed, numentries);
return (res);
}
/*****************************************************************************