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Synchronize the sizes of the external and internal buffers at start 

and end of message processing in the edit control.
This commit is contained in:
Dmitry Timoshkov 2001-01-10 23:55:02 +00:00 committed by Alexandre Julliard
parent db8fb6f387
commit f77709ea19
1 changed files with 65 additions and 9 deletions
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74
controls/edit.c
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@ -1482,25 +1482,22 @@ static void EDIT_LockBuffer(WND *wnd, EDITSTATE *es)
}
if (!es->text) {
CHAR *textA = NULL;
INT countA = 0;
UINT countA = 0;
BOOL _16bit = FALSE;
if(es->hloc32W)
{
/*TRACE("Locking 32-bit UNICODE buffer\n");*/
es->text = LocalLock(es->hloc32W);
if(es->hloc32A)
{
TRACE("Synchronizing with 32-bit ANSI buffer\n");
countA = LocalSize(es->hloc32A);
textA = LocalLock(es->hloc32A);
countA = strlen(textA) + 1;
}
else if(es->hloc16)
{
TRACE("Synchronizing with 16-bit ANSI buffer\n");
countA = LOCAL_Size(wnd->hInstance, es->hloc16);
textA = LOCAL_Lock(wnd->hInstance, es->hloc16);
countA = strlen(textA) + 1;
_16bit = TRUE;
}
}
@ -1511,7 +1508,31 @@ static void EDIT_LockBuffer(WND *wnd, EDITSTATE *es)
if(textA)
{
MultiByteToWideChar(CP_ACP, 0, textA, countA, es->text, es->buffer_size);
HLOCAL hloc32W_new;
UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
TRACE("%d bytes translated to %d WCHARs\n", countA, countW_new);
if(countW_new > es->buffer_size + 1)
{
UINT alloc_size = (countW_new * sizeof(WCHAR) + GROWLENGTH - 1) & ~(GROWLENGTH - 1);
TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
if(hloc32W_new)
{
es->hloc32W = hloc32W_new;
es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
}
else
WARN("FAILED! Will synchronize partially\n");
}
}
/*TRACE("Locking 32-bit UNICODE buffer\n");*/
es->text = LocalLock(es->hloc32W);
if(textA)
{
MultiByteToWideChar(CP_ACP, 0, textA, countA, es->text, es->buffer_size + 1);
if(_16bit)
LOCAL_Unlock(wnd->hInstance, es->hloc16);
else
@ -2140,25 +2161,60 @@ static void EDIT_UnlockBuffer(WND *wnd, EDITSTATE *es, BOOL force)
if (es->hloc32W) {
CHAR *textA = NULL;
BOOL _16bit = FALSE;
INT countA = 0;
UINT countA = 0;
UINT countW = strlenW(es->text) + 1;
if(es->hloc32A)
{
UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
TRACE("Synchronizing with 32-bit ANSI buffer\n");
TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
countA = LocalSize(es->hloc32A);
if(countA_new > countA)
{
HLOCAL hloc32A_new;
UINT alloc_size = (countA_new + GROWLENGTH - 1) & ~(GROWLENGTH - 1);
TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
if(hloc32A_new)
{
es->hloc32A = hloc32A_new;
countA = LocalSize(hloc32A_new);
TRACE("Real new size %d bytes\n", countA);
}
else
WARN("FAILED! Will synchronize partially\n");
}
textA = LocalLock(es->hloc32A);
}
else if(es->hloc16)
{
UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
TRACE("Synchronizing with 16-bit ANSI buffer\n");
TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
countA = LOCAL_Size(wnd->hInstance, es->hloc16);
if(countA_new > countA)
{
HLOCAL16 hloc16_new;
UINT alloc_size = (countA_new + GROWLENGTH - 1) & ~(GROWLENGTH - 1);
TRACE("Resizing 16-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
hloc16_new = LOCAL_ReAlloc(wnd->hInstance, es->hloc16, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
if(hloc16_new)
{
es->hloc16 = hloc16_new;
countA = LOCAL_Size(wnd->hInstance, hloc16_new);
TRACE("Real new size %d bytes\n", countA);
}
else
WARN("FAILED! Will synchronize partially\n");
}
textA = LOCAL_Lock(wnd->hInstance, es->hloc16);
_16bit = TRUE;
}
if(textA)
{
WideCharToMultiByte(CP_ACP, 0, es->text, es->buffer_size, textA, countA, NULL, NULL);
WideCharToMultiByte(CP_ACP, 0, es->text, countW, textA, countA, NULL, NULL);
if(_16bit)
LOCAL_Unlock(wnd->hInstance, es->hloc16);
else