* ReactOS Operating System
*/
-#include "w32csr.h"
-
#define NDEBUG
+
+#include "w32csr.h"
#include <debug.h>
-#define DESKTOP_WINDOW_ATOM 32880
+#define DESKTOP_WINDOW_ATOM 32769
#define PM_SHOW_DESKTOP 1
#define PM_HIDE_DESKTOP 2
typedef struct tagDTBG_THREAD_DATA
{
- HDESK Desktop;
- HANDLE Event;
- NTSTATUS Status;
+ HDESK Desktop;
+ HANDLE Event;
+ NTSTATUS Status;
} DTBG_THREAD_DATA, *PDTBG_THREAD_DATA;
typedef struct tagPRIVATE_NOTIFY_DESKTOP
{
- NMHDR hdr;
- union
- {
+ NMHDR hdr;
struct /* PM_SHOW_DESKTOP */
{
- int Width;
- int Height;
+ int Width;
+ int Height;
} ShowDesktop;
- };
} PRIVATE_NOTIFY_DESKTOP, *PPRIVATE_NOTIFY_DESKTOP;
static BOOL BgInitialized = FALSE;
static HWND VisibleDesktopWindow = NULL;
-static LRESULT CALLBACK
-DtbgWindowProc(HWND Wnd, UINT Msg, WPARAM wParam, LPARAM lParam)
+static
+LRESULT
+CALLBACK
+DtbgWindowProc(HWND Wnd,
+ UINT Msg,
+ WPARAM wParam,
+ LPARAM lParam)
{
- switch(Msg)
+ PAINTSTRUCT PS;
+
+ switch (Msg)
{
- case WM_ERASEBKGND:
+ case WM_ERASEBKGND:
+ PaintDesktop((HDC)wParam);
return 1;
- case WM_PAINT:
- {
- PAINTSTRUCT PS;
- RECT rc;
- HDC hDC;
-
- if(GetUpdateRect(Wnd, &rc, FALSE) &&
- (hDC = BeginPaint(Wnd, &PS)))
- {
- PaintDesktop(hDC);
- EndPaint(Wnd, &PS);
- }
+ case WM_PAINT:
+ if (BeginPaint(Wnd, &PS))
+ EndPaint(Wnd, &PS);
return 0;
- }
- case WM_SETCURSOR:
- return (LRESULT) SetCursor(LoadCursorW(0, (LPCWSTR)IDC_ARROW));
+ case WM_SETCURSOR:
+ return (LRESULT)SetCursor(LoadCursorW(0, (LPCWSTR)IDC_ARROW));
- case WM_NCCREATE:
- return (LRESULT) TRUE;
+ case WM_NCCREATE:
+ return (LRESULT)TRUE;
- case WM_CREATE:
+ case WM_CREATE:
+ case WM_CLOSE:
return 0;
- case WM_NOTIFY:
- {
+ case WM_DISPLAYCHANGE:
+ MoveWindow(Wnd, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
+ break;
+
+ case WM_NOTIFY:
+ {
PPRIVATE_NOTIFY_DESKTOP nmh = (PPRIVATE_NOTIFY_DESKTOP)lParam;
- /* Use WM_NOTIFY for private messages since it can't be sent between
- processes! */
- switch(nmh->hdr.code)
+ /* Use WM_NOTIFY for private messages since
+ * it can't be sent between processes!
+ */
+ switch (nmh->hdr.code)
+ {
+ case PM_SHOW_DESKTOP:
{
- case PM_SHOW_DESKTOP:
- {
LRESULT Result;
- Result = ! SetWindowPos(Wnd,
- NULL, 0, 0,
- nmh->ShowDesktop.Width,
- nmh->ShowDesktop.Height,
- SWP_NOACTIVATE | SWP_NOZORDER | SWP_SHOWWINDOW);
+ Result = !SetWindowPos(Wnd, NULL, 0, 0,
+ nmh->ShowDesktop.Width,
+ nmh->ShowDesktop.Height,
+ SWP_NOACTIVATE | SWP_NOZORDER |
+ SWP_SHOWWINDOW);
+
UpdateWindow(Wnd);
VisibleDesktopWindow = Wnd;
return Result;
- }
+ }
- case PM_HIDE_DESKTOP:
- {
+ case PM_HIDE_DESKTOP:
+ {
LRESULT Result;
- Result = ! SetWindowPos(Wnd,
- NULL, 0, 0, 0, 0,
- SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOMOVE | SWP_NOSIZE |
- SWP_HIDEWINDOW);
+ Result = !SetWindowPos(Wnd, NULL, 0, 0, 0, 0,
+ SWP_NOACTIVATE | SWP_NOZORDER |
+ SWP_NOMOVE | SWP_NOSIZE | SWP_HIDEWINDOW);
+
UpdateWindow(Wnd);
VisibleDesktopWindow = NULL;
return Result;
- }
+ }
- default:
- DPRINT("Unknown notification code 0x%x sent to the desktop window!\n", nmh->hdr.code);
+ default:
+ DPRINT("Unknown notification code 0x%x sent to the desktop window!\n",
+ nmh->hdr.code);
return 0;
}
- }
}
- return 0;
+ default:
+ return DefWindowProcW(Wnd, Msg, wParam, lParam);
+ }
+
+ return 0;
}
-static BOOL FASTCALL
-DtbgInit()
+static
+BOOL
+FASTCALL
+DtbgInit(VOID)
{
- WNDCLASSEXW Class;
- ATOM ClassAtom;
-
- /*
- * Create the desktop window class
- */
- Class.cbSize = sizeof(WNDCLASSEXW);
- Class.style = 0;
- Class.lpfnWndProc = DtbgWindowProc;
- Class.cbClsExtra = 0;
- Class.cbWndExtra = 0;
- Class.hInstance = (HINSTANCE) GetModuleHandleW(NULL);
- Class.hIcon = NULL;
- Class.hCursor = NULL;
- Class.hbrBackground = GetSysColorBrush(COLOR_BACKGROUND);
- Class.lpszMenuName = NULL;
- Class.lpszClassName = (LPCWSTR) DESKTOP_WINDOW_ATOM;
- ClassAtom = RegisterClassExW(&Class);
- if ((ATOM) 0 == ClassAtom)
+ WNDCLASSEXW Class;
+ ATOM ClassAtom;
+
+ /*
+ * Create the desktop window class
+ */
+ Class.cbSize = sizeof(WNDCLASSEXW);
+ Class.style = CS_GLOBALCLASS;
+ Class.lpfnWndProc = DtbgWindowProc;
+ Class.cbClsExtra = 0;
+ Class.cbWndExtra = 0;
+ Class.hInstance = (HINSTANCE)GetModuleHandleW(NULL);
+ Class.hIcon = NULL;
+ Class.hCursor = NULL;
+ Class.hbrBackground = GetSysColorBrush(COLOR_BACKGROUND);
+ Class.lpszMenuName = NULL;
+ Class.lpszClassName = (LPCWSTR)DESKTOP_WINDOW_ATOM;
+ ClassAtom = RegisterClassExW(&Class);
+
+ if (ClassAtom == INVALID_ATOM)
{
- DPRINT1("Unable to register desktop background class (error %d)\n",
- GetLastError());
- return FALSE;
+ DPRINT1("Unable to register desktop background class (error %d)\n",
+ GetLastError());
+
+ return FALSE;
}
- VisibleDesktopWindow = NULL;
- return TRUE;
+ VisibleDesktopWindow = NULL;
+
+ return TRUE;
}
-static DWORD STDCALL
+static
+DWORD
+WINAPI
DtbgDesktopThread(PVOID Data)
{
- HWND BackgroundWnd;
- MSG msg;
- PDTBG_THREAD_DATA ThreadData = (PDTBG_THREAD_DATA) Data;
+ HWND BackgroundWnd;
+ MSG msg;
+ PDTBG_THREAD_DATA ThreadData = (PDTBG_THREAD_DATA)Data;
- if (! SetThreadDesktop(ThreadData->Desktop))
+ if (!SetThreadDesktop(ThreadData->Desktop))
{
- DPRINT1("Failed to set thread desktop\n");
- ThreadData->Status = STATUS_UNSUCCESSFUL;
- SetEvent(ThreadData->Event);
- return 1;
+ DPRINT1("Failed to set thread desktop\n");
+ ThreadData->Status = STATUS_UNSUCCESSFUL;
+ SetEvent(ThreadData->Event);
+ return 1;
}
- BackgroundWnd = CreateWindowW((LPCWSTR) DESKTOP_WINDOW_ATOM,
- L"",
- WS_POPUP | WS_CLIPCHILDREN,
- 0,
- 0,
- 0,
- 0,
- NULL,
- NULL,
- (HINSTANCE) GetModuleHandleW(NULL),
- NULL);
- if (NULL == BackgroundWnd)
+
+ BackgroundWnd = CreateWindowW((LPCWSTR)DESKTOP_WINDOW_ATOM,
+ L"",
+ WS_POPUP | WS_CLIPCHILDREN,
+ 0, 0, 0, 0,
+ NULL, NULL,
+ (HINSTANCE)GetModuleHandleW(NULL),
+ NULL);
+
+ if (NULL == BackgroundWnd)
{
- DPRINT1("Failed to create desktop background window\n");
- ThreadData->Status = STATUS_UNSUCCESSFUL;
- SetEvent(ThreadData->Event);
- return 1;
+ DPRINT1("Failed to create desktop background window\n");
+ ThreadData->Status = STATUS_UNSUCCESSFUL;
+ SetEvent(ThreadData->Event);
+ return 1;
}
- ThreadData->Status = STATUS_SUCCESS;
- SetEvent(ThreadData->Event);
+ ThreadData->Status = STATUS_SUCCESS;
+ SetEvent(ThreadData->Event);
- while (GetMessageW(&msg, NULL, 0, 0))
+ while (GetMessageW(&msg, NULL, 0, 0))
{
- TranslateMessage(&msg);
- DispatchMessageW(&msg);
+ TranslateMessage(&msg);
+ DispatchMessageW(&msg);
}
- return 1;
+ return 1;
}
CSR_API(CsrCreateDesktop)
{
- DTBG_THREAD_DATA ThreadData;
- HANDLE ThreadHandle;
+ DTBG_THREAD_DATA ThreadData;
+ HANDLE ThreadHandle;
- DPRINT("CsrCreateDesktop\n");
+ DPRINT("CsrCreateDesktop\n");
- Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
- Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
+ Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
+ Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
- if (! BgInitialized)
+ if (!BgInitialized)
{
- BgInitialized = TRUE;
- if (! DtbgInit())
- {
- return STATUS_UNSUCCESSFUL;
- }
+ BgInitialized = TRUE;
+
+ if (!DtbgInit())
+ return STATUS_UNSUCCESSFUL;
}
- /*
- * the desktop handle we got from win32k is in the scope of CSRSS so we can just use it
- */
- ThreadData.Desktop = Request->Data.CreateDesktopRequest.DesktopHandle;
+ /*
+ * The desktop handle we got from win32k is in
+ * the scope of CSRSS so we can just use it.
+ */
+ ThreadData.Desktop = Request->Data.CreateDesktopRequest.DesktopHandle;
- ThreadData.Event = CreateEventW(NULL, FALSE, FALSE, NULL);
- if (NULL == ThreadData.Event)
+ ThreadData.Event = CreateEventW(NULL, FALSE, FALSE, NULL);
+
+ if (NULL == ThreadData.Event)
{
- DPRINT1("Failed to create event (error %d)\n", GetLastError());
- return STATUS_UNSUCCESSFUL;
+ DPRINT1("Failed to create event (error %d)\n", GetLastError());
+ return STATUS_UNSUCCESSFUL;
}
- ThreadHandle = CreateThread(NULL,
- 0,
- DtbgDesktopThread,
- (PVOID) &ThreadData,
- 0,
- NULL);
- if (NULL == ThreadHandle)
+
+ ThreadHandle = CreateThread(NULL,
+ 0,
+ DtbgDesktopThread,
+ (PVOID)&ThreadData,
+ 0,
+ NULL);
+
+ if (NULL == ThreadHandle)
{
- CloseHandle(ThreadData.Event);
- DPRINT1("Failed to create desktop window thread.\n");
- return STATUS_UNSUCCESSFUL;
+ CloseHandle(ThreadData.Event);
+ DPRINT1("Failed to create desktop window thread.\n");
+ return STATUS_UNSUCCESSFUL;
}
- CloseHandle(ThreadHandle);
- WaitForSingleObject(ThreadData.Event, INFINITE);
- CloseHandle(ThreadData.Event);
+ CloseHandle(ThreadHandle);
+
+ WaitForSingleObject(ThreadData.Event, INFINITE);
+ CloseHandle(ThreadData.Event);
- return ThreadData.Status;
+ return ThreadData.Status;
}
CSR_API(CsrShowDesktop)
{
- PRIVATE_NOTIFY_DESKTOP nmh;
- DPRINT("CsrShowDesktop\n");
+ PRIVATE_NOTIFY_DESKTOP nmh;
+ DPRINT("CsrShowDesktop\n");
- Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
- Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
+ Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
+ Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
- nmh.hdr.hwndFrom = Request->Data.ShowDesktopRequest.DesktopWindow;
- nmh.hdr.idFrom = 0;
- nmh.hdr.code = PM_SHOW_DESKTOP;
+ nmh.hdr.hwndFrom = Request->Data.ShowDesktopRequest.DesktopWindow;
+ nmh.hdr.idFrom = 0;
+ nmh.hdr.code = PM_SHOW_DESKTOP;
- nmh.ShowDesktop.Width = (int)Request->Data.ShowDesktopRequest.Width;
- nmh.ShowDesktop.Height = (int)Request->Data.ShowDesktopRequest.Height;
+ nmh.ShowDesktop.Width = (int)Request->Data.ShowDesktopRequest.Width;
+ nmh.ShowDesktop.Height = (int)Request->Data.ShowDesktopRequest.Height;
- return SendMessageW(Request->Data.ShowDesktopRequest.DesktopWindow,
- WM_NOTIFY,
- (WPARAM)nmh.hdr.hwndFrom,
- (LPARAM)&nmh)
- ? STATUS_UNSUCCESSFUL : STATUS_SUCCESS;
+ if (SendMessageW(Request->Data.ShowDesktopRequest.DesktopWindow,
+ WM_NOTIFY,
+ (WPARAM)nmh.hdr.hwndFrom,
+ (LPARAM)&nmh))
+ {
+ return STATUS_UNSUCCESSFUL;
+ }
+
+ return STATUS_SUCCESS;
}
CSR_API(CsrHideDesktop)
{
- PRIVATE_NOTIFY_DESKTOP nmh;
- DPRINT("CsrHideDesktop\n");
+ PRIVATE_NOTIFY_DESKTOP nmh;
+ DPRINT("CsrHideDesktop\n");
+
+ Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
+ Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
- Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
- Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
+ nmh.hdr.hwndFrom = Request->Data.ShowDesktopRequest.DesktopWindow;
+ nmh.hdr.idFrom = 0;
+ nmh.hdr.code = PM_HIDE_DESKTOP;
- nmh.hdr.hwndFrom = Request->Data.ShowDesktopRequest.DesktopWindow;
- nmh.hdr.idFrom = 0;
- nmh.hdr.code = PM_HIDE_DESKTOP;
+ if (SendMessageW(Request->Data.ShowDesktopRequest.DesktopWindow,
+ WM_NOTIFY,
+ (WPARAM)nmh.hdr.hwndFrom,
+ (LPARAM)&nmh))
+ {
+ return STATUS_UNSUCCESSFUL;
+ }
- return SendMessageW(Request->Data.ShowDesktopRequest.DesktopWindow,
- WM_NOTIFY,
- (WPARAM)nmh.hdr.hwndFrom,
- (LPARAM)&nmh)
- ? STATUS_UNSUCCESSFUL : STATUS_SUCCESS;
+ return STATUS_SUCCESS;
}
-BOOL FASTCALL
+BOOL
+FASTCALL
DtbgIsDesktopVisible(VOID)
{
- if (NULL != VisibleDesktopWindow && ! IsWindowVisible(VisibleDesktopWindow))
+ if (VisibleDesktopWindow != NULL &&
+ !IsWindowVisible(VisibleDesktopWindow))
{
- VisibleDesktopWindow = NULL;
+ VisibleDesktopWindow = NULL;
}
- return NULL != VisibleDesktopWindow;
+ return VisibleDesktopWindow != NULL;
}
/* EOF */
projects / reactos.git / blobdiff