User32PostThreadMessage(Int32, Int32, IntPtr, IntPtr) Method

[DllImportAttribute("User32.dll", SetLastError = true)]
public static bool PostThreadMessage(
	int threadId,
	int message,
	IntPtr wparam,
	IntPtr lparam
)

<DllImportAttribute("User32.dll", SetLastError := true>]
Public Shared Function PostThreadMessage ( 
	threadId As Integer,
	message As Integer,
	wparam As IntPtr,
	lparam As IntPtr
) As Boolean

Dim threadId As Integer
Dim message As Integer
Dim wparam As IntPtr
Dim lparam As IntPtr

Dim returnValue As Boolean

returnValue = User32.PostThreadMessage(threadId, 
	message, wparam, lparam)

public:
[DllImportAttribute(L"User32.dll", SetLastError = true)]
static bool PostThreadMessage(
	int threadId, 
	int message, 
	IntPtr wparam, 
	IntPtr lparam
)

[<DllImportAttribute("User32.dll", SetLastError = true)>]
static member PostThreadMessage : 
        threadId : int * 
        message : int * 
        wparam : IntPtr * 
        lparam : IntPtr -> bool 

No code example is currently available or this language may not be supported.

Parameters

threadId  Int32

The identifier of the thread to which the message is to be posted.

The function fails if the specified thread does not have a message queue. The system creates a thread's message queue when the thread makes its first call to one of the User or GDI functions.

Message posting is subject to UIPI. The thread of a process can post messages only to posted-message queues of threads in processes of lesser or equal integrity level.

This thread must have the SE_TCB_NAME privilege to post a message to a thread that belongs to a process with the same locally unique identifier (LUID) but is in a different desktop. Otherwise, the function fails and returns ERROR_INVALID_THREAD_ID.

message  Int32

The type of message to be posted.

wparam  IntPtr

Specifies additional message-specific information.

lparam  IntPtr

Specifies additional message-specific information.

Return Value

If the function fails, the return value is .

To get extended error information, call GetLastWin32Error.

Reference