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gdi32: Make sure DCs are fully zero-initialized.

This commit is contained in:
Alexandre Julliard 2011-12-07 11:54:57 +01:00
parent 1fa1ab5437
commit 1f15ffa1e6
1 changed files with 2 additions and 42 deletions
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44
dlls/gdi32/dc.c
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@ -75,43 +75,21 @@ DC *alloc_dc_ptr( WORD magic )
{
DC *dc;
if (!(dc = HeapAlloc( GetProcessHeap(), 0, sizeof(*dc) ))) return NULL;
if (!(dc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*dc) ))) return NULL;
dc->nulldrv.funcs = &null_driver;
dc->nulldrv.next = NULL;
dc->dibdrv = NULL;
dc->physDev = &dc->nulldrv;
dc->thread = GetCurrentThreadId();
dc->refcount = 1;
dc->dirty = 0;
dc->saveLevel = 0;
dc->saved_dc = 0;
dc->dwHookData = 0;
dc->hookProc = NULL;
dc->wndOrgX = 0;
dc->wndOrgY = 0;
dc->wndExtX = 1;
dc->wndExtY = 1;
dc->vportOrgX = 0;
dc->vportOrgY = 0;
dc->vportExtX = 1;
dc->vportExtY = 1;
dc->miterLimit = 10.0f; /* 10.0 is the default, from MSDN */
dc->flags = 0;
dc->layout = 0;
dc->hClipRgn = 0;
dc->hMetaRgn = 0;
dc->hMetaClipRgn = 0;
dc->hVisRgn = 0;
dc->region = 0;
dc->hPen = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
dc->hBrush = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
dc->hFont = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
dc->hBitmap = 0;
dc->hDevice = 0;
dc->hPalette = GetStockObject( DEFAULT_PALETTE );
dc->gdiFont = 0;
dc->path = NULL;
dc->font_code_page = CP_ACP;
dc->ROPmode = R2_COPYPEN;
dc->polyFillMode = ALTERNATE;
@ -122,18 +100,9 @@ DC *alloc_dc_ptr( WORD magic )
dc->dcBrushColor = RGB( 255, 255, 255 );
dc->dcPenColor = RGB( 0, 0, 0 );
dc->textColor = RGB( 0, 0, 0 );
dc->brushOrgX = 0;
dc->brushOrgY = 0;
dc->mapperFlags = 0;
dc->textAlign = TA_LEFT | TA_TOP | TA_NOUPDATECP;
dc->charExtra = 0;
dc->breakExtra = 0;
dc->breakRem = 0;
dc->MapMode = MM_TEXT;
dc->GraphicsMode = GM_COMPATIBLE;
dc->pAbortProc = NULL;
dc->CursPosX = 0;
dc->CursPosY = 0;
dc->ArcDirection = AD_COUNTERCLOCKWISE;
dc->xformWorld2Wnd.eM11 = 1.0f;
dc->xformWorld2Wnd.eM12 = 0.0f;
@ -144,10 +113,6 @@ DC *alloc_dc_ptr( WORD magic )
dc->xformWorld2Vport = dc->xformWorld2Wnd;
dc->xformVport2World = dc->xformWorld2Wnd;
dc->vport2WorldValid = TRUE;
dc->BoundsRect.left = 0;
dc->BoundsRect.top = 0;
dc->BoundsRect.right = 0;
dc->BoundsRect.bottom = 0;
if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
{
@ -371,7 +336,7 @@ INT nulldrv_SaveDC( PHYSDEV dev )
{
DC *newdc, *dc = get_nulldrv_dc( dev );
if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc )))) return 0;
if (!(newdc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*newdc )))) return 0;
newdc->flags = dc->flags;
newdc->layout = dc->layout;
newdc->hPen = dc->hPen;
@ -420,11 +385,6 @@ INT nulldrv_SaveDC( PHYSDEV dev )
/* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
newdc->region = 0;
newdc->hVisRgn = 0;
newdc->hClipRgn = 0;
newdc->hMetaRgn = 0;
newdc->hMetaClipRgn = 0;
if (dc->hClipRgn)
{
newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );