HDC get_display_dc(void)
{
static const WCHAR displayW[] = {'D','I','S','P','L','A','Y',0};
if(!display_dc) {
HDC hdc;
hdc = CreateICW(displayW, NULL, NULL, NULL);
if(InterlockedCompareExchangePointer((void**)&display_dc, hdc, NULL))
DeleteObject(hdc);
}
return display_dc;
}
static PSETTINGS_ENTRY
GetPossibleSettings(IN LPCWSTR lpDeviceName,
OUT DWORD* pSettingsCount,
OUT PSETTINGS_ENTRY* CurrentSettings)
{
DEVMODEW devmode;
DWORD NbSettings = 0;
DWORD iMode = 0;
DWORD dwFlags = 0;
PSETTINGS_ENTRY Settings = NULL;
HDC hDC;
PSETTINGS_ENTRY Current;
DWORD bpp, xres, yres, checkbpp;
/* Get current settings */
*CurrentSettings = NULL;
hDC = CreateICW(NULL, lpDeviceName, NULL, NULL);
bpp = GetDeviceCaps(hDC, PLANES);
bpp *= GetDeviceCaps(hDC, BITSPIXEL);
xres = GetDeviceCaps(hDC, HORZRES);
yres = GetDeviceCaps(hDC, VERTRES);
DeleteDC(hDC);
/* List all settings */
devmode.dmSize = (WORD)sizeof(DEVMODE);
devmode.dmDriverExtra = 0;
if (!EnumDisplaySettingsExW(lpDeviceName, ENUM_CURRENT_SETTINGS, &devmode, dwFlags))
return NULL;
while (EnumDisplaySettingsExW(lpDeviceName, iMode, &devmode, dwFlags))
{
if (devmode.dmBitsPerPel==8 ||
devmode.dmBitsPerPel==16 ||
devmode.dmBitsPerPel==24 ||
devmode.dmBitsPerPel==32)
{
checkbpp=1;
}
else
checkbpp=0;
if (devmode.dmPelsWidth < 640 ||
devmode.dmPelsHeight < 480 || checkbpp == 0)
{
iMode++;
continue;
}
Current = HeapAlloc(GetProcessHeap(), 0, sizeof(SETTINGS_ENTRY));
if (Current != NULL)
{
/* Sort resolutions by increasing height, and BPP */
PSETTINGS_ENTRY Previous = NULL;
PSETTINGS_ENTRY Next = Settings;
Current->dmPelsWidth = devmode.dmPelsWidth;
Current->dmPelsHeight = devmode.dmPelsHeight;
Current->dmBitsPerPel = devmode.dmBitsPerPel;
while (Next != NULL &&
(Next->dmPelsWidth < Current->dmPelsWidth ||
(Next->dmPelsWidth == Current->dmPelsWidth && Next->dmPelsHeight < Current->dmPelsHeight) ||
(Next->dmPelsHeight == Current->dmPelsHeight &&
Next->dmPelsWidth == Current->dmPelsWidth &&
Next->dmBitsPerPel < Current->dmBitsPerPel )))
{
Previous = Next;
Next = Next->Flink;
}
Current->Blink = Previous;
Current->Flink = Next;
if (Previous == NULL)
Settings = Current;
else
Previous->Flink = Current;
if (Next != NULL)
Next->Blink = Current;
if (devmode.dmPelsWidth == xres && devmode.dmPelsHeight == yres && devmode.dmBitsPerPel == bpp)
{
*CurrentSettings = Current;
}
NbSettings++;
}
iMode++;
}
*pSettingsCount = NbSettings;
return Settings;
}
/*****************************************************************************
* SIC_Initialize [internal]
*/
BOOL SIC_Initialize(void)
{
HICON hSm = NULL, hLg = NULL;
INT cx_small, cy_small;
INT cx_large, cy_large;
HDC hDC;
INT bpp;
DWORD ilMask;
BOOL result = FALSE;
TRACE("Entered SIC_Initialize\n");
if (sic_hdpa)
{
TRACE("Icon cache already initialized\n");
return TRUE;
}
sic_hdpa = DPA_Create(16);
if (!sic_hdpa)
{
return FALSE;
}
hDC = CreateICW(L"DISPLAY", NULL, NULL, NULL);
if (!hDC)
{
ERR("Failed to create information context (error %d)\n", GetLastError());
goto end;
}
bpp = GetDeviceCaps(hDC, BITSPIXEL);
DeleteDC(hDC);
if (bpp <= 4)
ilMask = ILC_COLOR4;
else if (bpp <= 8)
ilMask = ILC_COLOR8;
else if (bpp <= 16)
ilMask = ILC_COLOR16;
else if (bpp <= 24)
ilMask = ILC_COLOR24;
else if (bpp <= 32)
ilMask = ILC_COLOR32;
else
ilMask = ILC_COLOR;
ilMask |= ILC_MASK;
cx_small = GetSystemMetrics(SM_CXSMICON);
cy_small = GetSystemMetrics(SM_CYSMICON);
cx_large = GetSystemMetrics(SM_CXICON);
cy_large = GetSystemMetrics(SM_CYICON);
ShellSmallIconList = ImageList_Create(cx_small,
cy_small,
ilMask,
100,
100);
if (!ShellSmallIconList)
{
ERR("Failed to create the small icon list.\n");
goto end;
}
ShellBigIconList = ImageList_Create(cx_large,
cy_large,
ilMask,
100,
100);
if (!ShellBigIconList)
{
ERR("Failed to create the big icon list.\n");
goto end;
}
/* Load the document icon, which is used as the default if an icon isn't found. */
hSm = (HICON)LoadImageW(shell32_hInstance,
MAKEINTRESOURCEW(IDI_SHELL_DOCUMENT),
IMAGE_ICON,
cx_small,
cy_small,
LR_SHARED | LR_DEFAULTCOLOR);
if (!hSm)
{
ERR("Failed to load small IDI_SHELL_DOCUMENT icon!\n");
goto end;
}
hLg = (HICON)LoadImageW(shell32_hInstance,
MAKEINTRESOURCEW(IDI_SHELL_DOCUMENT),
IMAGE_ICON,
cx_large,
cy_large,
LR_SHARED | LR_DEFAULTCOLOR);
if (!hLg)
{
ERR("Failed to load large IDI_SHELL_DOCUMENT icon!\n");
goto end;
}
if(SIC_IconAppend(swShell32Name, IDI_SHELL_DOCUMENT-1, hSm, hLg, 0) == INVALID_INDEX)
{
ERR("Failed to add IDI_SHELL_DOCUMENT icon to cache.\n");
goto end;
}
if(SIC_IconAppend(swShell32Name, -IDI_SHELL_DOCUMENT, hSm, hLg, 0) == INVALID_INDEX)
{
ERR("Failed to add IDI_SHELL_DOCUMENT icon to cache.\n");
goto end;
}
/* Everything went fine */
result = TRUE;
end:
/* The image list keeps a copy of the icons, we must destroy them */
if(hSm) DestroyIcon(hSm);
if(hLg) DestroyIcon(hLg);
/* Clean everything if something went wrong */
if(!result)
{
if(sic_hdpa) DPA_Destroy(sic_hdpa);
if(ShellSmallIconList) ImageList_Destroy(ShellSmallIconList);
if(ShellBigIconList) ImageList_Destroy(ShellSmallIconList);
sic_hdpa = NULL;
ShellSmallIconList = NULL;
ShellBigIconList = NULL;
}
TRACE("hIconSmall=%p hIconBig=%p\n",ShellSmallIconList, ShellBigIconList);
return result;
}
INT
Test_NtGdiSaveDC(PTESTINFO pti)
{
HDC hdc, hdc2;
HWND hwnd;
HBITMAP hbmp1, hbmp2, hOldBmp;
/* Test 0 hdc */
TEST(NtGdiSaveDC(0) == 0);
/* Test info dc */
hdc = CreateICW(L"DISPLAY",NULL,NULL,NULL);
TEST(hdc);
TEST(NtGdiSaveDC(hdc) == 1);
TEST(NtGdiSaveDC(hdc) == 2);
DeleteDC(hdc);
/* Test display dc */
hdc = GetDC(0);
TEST(hdc);
TEST(NtGdiSaveDC(hdc) == 1);
TEST(NtGdiSaveDC(hdc) == 2);
ReleaseDC(0, hdc);
/* Test a mem DC */
hdc = CreateCompatibleDC(0);
TEST(hdc);
TEST(NtGdiSaveDC(hdc) == 1);
TEST(NtGdiSaveDC(hdc) == 2);
DeleteDC(hdc);
/* Create a window */
hwnd = CreateWindowW(L"BUTTON", L"TestWindow", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
10, 10, 100, 100,
NULL, NULL, g_hInstance, 0);
hdc = GetDC(hwnd);
TEST(hdc);
TEST(NtGdiSaveDC(hdc) == 1);
NtGdiRestoreDC(hdc, 1);
ReleaseDC(hwnd, hdc);
DestroyWindow(hwnd);
/* test behaviour when a bitmap is selected */
hbmp1 = CreateBitmap(2, 2, 1, 1, NULL);
TEST(hbmp1);
hbmp2 = CreateBitmap(2, 2, 1, 1, NULL);
TEST(hbmp2);
hdc = CreateCompatibleDC(0);
TEST(hdc);
hdc2 = CreateCompatibleDC(0);
TEST(hdc2);
hOldBmp = SelectObject(hdc, hbmp1);
TEST(hOldBmp);
TEST(NtGdiSaveDC(hdc) == 1);
TEST(SelectObject(hdc, hbmp2) == hbmp1);
TEST(SelectObject(hdc2, hbmp1) == NULL);
SelectObject(hdc, hOldBmp);
NtGdiRestoreDC(hdc, 1);
TEST(GetCurrentObject(hdc, OBJ_BITMAP) == hbmp1);
/* Again, just to be sure */
TEST(NtGdiSaveDC(hdc) == 1);
TEST(NtGdiSaveDC(hdc) == 2);
TEST(SelectObject(hdc, hbmp2) == hbmp1);
TEST(SelectObject(hdc2, hbmp1) == NULL);
SelectObject(hdc, hOldBmp);
NtGdiRestoreDC(hdc, 2);
TEST(GetCurrentObject(hdc, OBJ_BITMAP) == hbmp1);
/*Cleanup */
SelectObject(hdc, hOldBmp);
DeleteDC(hdc);
DeleteDC(hdc2);
DeleteObject(hbmp1);
DeleteObject(hbmp2);
return APISTATUS_NORMAL;
}
