Sweden-Number/dlls/commdlg/cdlg32.c

129 lines
3.0 KiB
C

/*
* Common Dialog Boxes interface (32 bit)
* Find/Replace
*
* Copyright 1999 Bertho A. Stultiens
*/
#include "winbase.h"
#include "commdlg.h"
#include "cderr.h"
#include "debug.h"
DEFAULT_DEBUG_CHANNEL(commdlg)
#include "cdlg.h"
HINSTANCE COMDLG32_hInstance = 0;
HINSTANCE16 COMDLG32_hInstance16 = 0;
static DWORD COMDLG32_TlsIndex;
static int COMDLG32_Attach = 0;
/***********************************************************************
* COMDLG32_DllEntryPoint (COMDLG32.entry)
*
* Initialization code for the COMDLG32 DLL
*
* RETURNS:
* FALSE if sibling could not be loaded or instantiated twice, TRUE
* otherwise.
*/
BOOL WINAPI COMDLG32_DllEntryPoint(HINSTANCE hInstance, DWORD Reason, LPVOID Reserved)
{
TRACE(commdlg, "(%08x, %08lx, %p)\n", hInstance, Reason, Reserved);
switch(Reason)
{
case DLL_PROCESS_ATTACH:
COMDLG32_Attach++;
if(COMDLG32_hInstance)
{
ERR(commdlg, "comdlg32.dll instantiated twice in one address space!\n");
/*
* We should return FALSE here, but that will break
* most apps that use CreateProcess because we do
* not yet support seperate address spaces.
*/
return TRUE;
}
COMDLG32_hInstance = hInstance;
DisableThreadLibraryCalls(hInstance);
if(!COMDLG32_hInstance16)
{
if(!(COMDLG32_hInstance16 = LoadLibrary16("commdlg.dll")))
{
ERR(commdlg, "Could not load sibling commdlg.dll\n");
return FALSE;
}
}
if((COMDLG32_TlsIndex = TlsAlloc()) == 0xffffffff)
{
ERR(commdlg, "No space for COMDLG32 TLS\n");
return FALSE;
}
break;
case DLL_PROCESS_DETACH:
if(!--COMDLG32_Attach)
{
TlsFree(COMDLG32_TlsIndex);
COMDLG32_hInstance = 0;
if(COMDLG32_hInstance16)
FreeLibrary16(COMDLG32_hInstance16);
}
break;
}
return TRUE;
}
/***********************************************************************
* COMDLG32_AllocMem (internal)
* Get memory for internal datastructure plus stringspace etc.
* RETURNS
* Pointer to a heap block: Succes
* NULL: Failure
*/
LPVOID COMDLG32_AllocMem(
int size /* [in] Block size to allocate */
) {
LPVOID ptr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
if(!ptr)
{
COMDLG32_SetCommDlgExtendedError(CDERR_MEMALLOCFAILURE);
return NULL;
}
return ptr;
}
/***********************************************************************
* COMDLG32_SetCommDlgExtendedError (internal)
*
* Used to set the thread's local error value if a comdlg32 function fails.
*/
void COMDLG32_SetCommDlgExtendedError(DWORD err)
{
TRACE(commdlg, "(%08lx)\n", err);
TlsSetValue(COMDLG32_TlsIndex, (void *)err);
}
/***********************************************************************
* CommDlgExtendedError (COMDLG32.5)
*
* Get the thread's local error value if a comdlg32 function fails.
* RETURNS
* Current error value which might not be valid
* if a previous call succeeded.
*/
DWORD WINAPI CommDlgExtendedError(void)
{
return (DWORD)TlsGetValue(COMDLG32_TlsIndex);
}