https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0f6b9664cd1e7c44ed255353304a1f9c37c67841
commit 0f6b9664cd1e7c44ed255353304a1f9c37c67841 Author: Hervé Poussineau <[email protected]> AuthorDate: Sat Jun 19 18:18:14 2021 +0200 Commit: Hervé Poussineau <[email protected]> CommitDate: Sat Jul 10 16:27:44 2021 +0200 [WIN32K] HACK: create a DC on all display devices and display wallpaper --- win32ss/gdi/eng/device.c | 11 +++++++++++ win32ss/user/ntuser/winsta.c | 16 ++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/win32ss/gdi/eng/device.c b/win32ss/gdi/eng/device.c index a02ef9d3a32..46b9716016f 100644 --- a/win32ss/gdi/eng/device.c +++ b/win32ss/gdi/eng/device.c @@ -439,6 +439,17 @@ EngpRegisterGraphicsDevice( EngReleaseSemaphore(ghsemGraphicsDeviceList); TRACE("Prepared %lu modes for %ls\n", pGraphicsDevice->cDevModes, pGraphicsDevice->pwszDescription); + /* HACK: already in graphic mode; display wallpaper on this new display */ + if (ScreenDeviceContext) + { + UNICODE_STRING DriverName = RTL_CONSTANT_STRING(L"DISPLAY"); + UNICODE_STRING DisplayName; + HDC hdc; + RtlInitUnicodeString(&DisplayName, pGraphicsDevice->szWinDeviceName); + hdc = IntGdiCreateDC(&DriverName, &DisplayName, NULL, NULL, FALSE); + IntPaintDesktop(hdc); + } + return pGraphicsDevice; } diff --git a/win32ss/user/ntuser/winsta.c b/win32ss/user/ntuser/winsta.c index b5854f3dc22..b6f5f5d1459 100644 --- a/win32ss/user/ntuser/winsta.c +++ b/win32ss/user/ntuser/winsta.c @@ -327,6 +327,22 @@ co_IntInitializeDesktopGraphics(VOID) ASSERT(pdesk); co_IntShowDesktop(pdesk, gpsi->aiSysMet[SM_CXSCREEN], gpsi->aiSysMet[SM_CYSCREEN], TRUE); + /* HACK: display wallpaper on all secondary displays */ + { + PGRAPHICS_DEVICE pGraphicsDevice; + UNICODE_STRING DriverName = RTL_CONSTANT_STRING(L"DISPLAY"); + UNICODE_STRING DisplayName; + HDC hdc; + ULONG iDevNum; + + for (iDevNum = 1; (pGraphicsDevice = EngpFindGraphicsDevice(NULL, iDevNum, 0)) != NULL; iDevNum++) + { + RtlInitUnicodeString(&DisplayName, pGraphicsDevice->szWinDeviceName); + hdc = IntGdiCreateDC(&DriverName, &DisplayName, NULL, NULL, FALSE); + IntPaintDesktop(hdc); + } + } + return TRUE; }
