|
Overview |
|
|
|
Group |
|
|
|
Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| user32.lib
| Header File
| winuser.h
| Unicode
| WinNT
| Platform Notes
| None
|
|
|
OpenDesktop
The OpenDesktop function returns a handle to an existing desktop. A desktop is a secure
object contained within a window station object. A desktop has a logical display
surface and contains windows, menus and hooks.
HDESK OpenDesktop(
LPTSTR lpszDesktop,
| // name of the desktop to open
| DWORD dwFlags,
| // flags to control interaction with other applications
| BOOL fInherit,
| // specifies whether returned handle is inheritable
| DWORD dwDesiredAccess
| // specifies access of returned handle
| );
|
|
Parameters
lpszDesktop
Points to null-terminated string specifying the name of the desktop to be
opened. Desktop names are case-insensitive.
dwFlags
A bit flag parameter that controls how the calling application will cooperate
with other applications on the desktop. This parameter can specify zero or the
following value:
Value
| Description
| DF_ALLOWOTHERACCOUNTHOOK
| Allows processes running in other accounts on the desktop to set hooks in this
process.
|
fInherit
Specifies whether the returned handle is inherited when a new process is
created. If this value is TRUE, new processes will inherit the handle.
dwDesiredAccess
Specifies the type of access to the desktop. This parameter can be one or more
of the following values:
Value
| Description
| DESKTOP_CREATEMENU
| Required to create a menu on the desktop.
| DESKTOP_CREATEWINDOW
| Required to create a window on the desktop.
| DESKTOP_ENUMERATE
| Required for the desktop to be enumerated.
| DESKTOP_HOOKCONTROL
| Required to establish any of the window hooks.
| DESKTOP_JOURNALPLAYBACK
| Required to perform journal playback on the desktop.
| DESKTOP_JOURNALRECORD
| Required to perform journal recording on the desktop.
| DESKTOP_READOBJECTS
| Required to read objects on the desktop.
| DESKTOP_SWITCHDESKTOP
| Required to activate the desktop using SwitchDesktop.
| DESKTOP_WRITEOBJECTS
| Required to write objects on the desktop.
|
Return Values
If the function succeeds, the return value is the handle to the opened desktop.
If the function fails, the return value is NULL. To get extended error
information, call GetLastError.
Remarks
The calling process must have an associated window station, either assigned by
the system at process creation time or set by the SetProcessWindowStation function.
See Also
CreateDesktop, SetProcessWindowStation, SetThreadDesktop, SwitchDesktop
| Last news from Greatis Software |
 |
|
Nostalgia .Net |
|
.Net is powerful, but not all-powerful, so sometimes we need to use Win32 API for our .Net applications. It's simple enough with Platform Invoke if you have Win32 skill, but we do not always have time to dig the ancient documentation, declare the special types that are compatible with Win32, find the values of the Win32's constants and so on. Nostalgia .Net offers several simple-to-use classes, and components that will allow you to forget about the headache of Win32 and just use the power of Win32 in your application the same way as you use the native. Net classes. More » |
| Recommended software for developers |
 |
|
Ultimate Pack |
|
Component pack for Delphi and C++ Builder that contains runtime form designer, runtime object inspector, print suite and much more for the very special price. More » |
 |
|
Form Designer .Net |
|
Unique runtime form design solution that allows to edit any form in .Net WinForms application at runtime with full source codes for only 300 euro! More » |
 |
|
Print Suite .Net |
|
Print Suite .Net is a set of components for easy printing texts, images and grids from your WinForms applications. Full C# source codes are available More » |
 |
|
Gradient Controls .Net |
|
Gradient Controls .Net offers controls with gradient background feature. Labels, panels and so on... Full C# source codes are available More » |
 |
|
Greatis iGrid |
|
iGrid plots drawing grid right over your desktop, so you can use it everywhere, with any drawing application without any special plugins for different graphic editors. More » |
All the contacts and projectsDmitry Vasiliev (just.dmitry)
Related LinksSoftware for Visual Studio .NET developers
Software for Delphi and C++ Builder developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET More Online Helps Win32 Programmer's Reference
Win32 Multimedia Programmer's Reference
OLE Programmer's Reference
Microsoft Windows Pen API Programmer's Reference
Microsoft Windows Sockets 2 Reference
Microsoft Windows Telephony API (TAPI) Programmer's Reference
Unix Manual Pages
|
