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user: Added helper functions for buffer management in WINPROC_CallProc32WTo32A..

This commit is contained in:
Alexandre Julliard 2006-05-18 11:03:30 +02:00
parent de125e656e
commit cb36cbd0aa
1 changed files with 15 additions and 10 deletions
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25
dlls/user/winproc.c
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@ -2984,6 +2984,17 @@ static LRESULT WINPROC_CallProc32ATo32W( WNDPROC func, HWND hwnd, UINT msg, WPAR
}
static inline void *get_buffer( void *static_buffer, size_t size, size_t need )
{
if (size >= need) return static_buffer;
return HeapAlloc( GetProcessHeap(), 0, need );
}
static inline void free_buffer( void *static_buffer, void *buffer )
{
if (buffer != static_buffer) HeapFree( GetProcessHeap(), 0, buffer );
}
/**********************************************************************
* WINPROC_CallProc32WTo32A
*
@ -3005,8 +3016,7 @@ static LRESULT WINPROC_CallProc32WTo32A( WNDPROC func, HWND hwnd, UINT msg, WPAR
{ /* csW->lpszName and csW->lpszClass are NOT supposed to be atoms
* at this point.
*/
char buffer[1024];
char *cls = buffer, *name;
char buffer[1024], *cls, *name;
CREATESTRUCTW *csW = (CREATESTRUCTW *)lParam;
CREATESTRUCTA csA = *(CREATESTRUCTA *)csW;
MDICREATESTRUCTA mdi_cs;
@ -3023,11 +3033,7 @@ static LRESULT WINPROC_CallProc32WTo32A( WNDPROC func, HWND hwnd, UINT msg, WPAR
else
name_lenW = name_lenA = 0;
if (class_lenA + name_lenA + 2 > sizeof(buffer))
{
cls = HeapAlloc(GetProcessHeap(), 0, class_lenA + name_lenA + 2);
if (!cls) break;
}
if (!(cls = get_buffer( buffer, sizeof(buffer), class_lenA + name_lenA + 2 ))) break;
RtlUnicodeToMultiByteN(cls, class_lenA, NULL, csW->lpszClass, class_lenW);
cls[class_lenA] = 0;
@ -3049,9 +3055,8 @@ static LRESULT WINPROC_CallProc32WTo32A( WNDPROC func, HWND hwnd, UINT msg, WPAR
csA.lpCreateParams = &mdi_cs;
}
ret = WINPROC_CallWndProc( func, hwnd, msg, wParam, (LPARAM)&csA );
if (cls != buffer) HeapFree(GetProcessHeap(), 0, cls);
ret = WINPROC_CallWndProc(func, hwnd, msg, wParam, (LPARAM)&csA);
free_buffer( buffer, cls );
}
break;