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User32BroadcastSystemMessageEx(BroadcastSystemMessageFlags, BroadcastSystemMessageInfo, UInt32, IntPtr, IntPtr, BroadcastSystemMessageExInfo) Method

Sends a message to the specified recipients.

The recipients can be applications, installable drivers, network drivers, system-level device drivers, or any combination of these system components.

This function is similar to BroadcastSystemMessage(BroadcastSystemMessageFlags, BroadcastSystemMessageInfo, WindowMessages, IntPtr, IntPtr) except that this function can return more information from the recipients

Definition

Namespace: DevCase.Win32.NativeMethods
Assembly: DevCase.net48 (in DevCase.net48.dll) Version: 6.0.0.0 (6.0)
XMLNS for XAML: Not mapped to an xmlns.

C#Request Example

[DllImportAttribute("User32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static int BroadcastSystemMessageEx(
	BroadcastSystemMessageFlags flags,
	ref BroadcastSystemMessageInfo refInfo,
	uint msg,
	[OptionalAttribute] IntPtr wParam,
	[OptionalAttribute] IntPtr lParam,
	ref BroadcastSystemMessageExInfo refMsgInfo
)

VBRequest Example

<DllImportAttribute("User32.dll", CharSet := CharSet.Auto, SetLastError := true>]
Public Shared Function BroadcastSystemMessageEx ( 
	flags As BroadcastSystemMessageFlags,
	ByRef refInfo As BroadcastSystemMessageInfo,
	msg As UInteger,
	<OptionalAttribute> wParam As IntPtr,
	<OptionalAttribute> lParam As IntPtr,
	ByRef refMsgInfo As BroadcastSystemMessageExInfo
) As Integer

Dim flags As BroadcastSystemMessageFlags
Dim refInfo As BroadcastSystemMessageInfo
Dim msg As UInteger
Dim wParam As IntPtr
Dim lParam As IntPtr
Dim refMsgInfo As BroadcastSystemMessageExInfo

Dim returnValue As Integer

returnValue = User32.BroadcastSystemMessageEx(flags, 
	refInfo, msg, wParam, lParam, refMsgInfo)

C++Request Example

public:
[DllImportAttribute(L"User32.dll", CharSet = CharSet::Auto, SetLastError = true)]
static int BroadcastSystemMessageEx(
	BroadcastSystemMessageFlags flags, 
	BroadcastSystemMessageInfo% refInfo, 
	unsigned int msg, 
	[OptionalAttribute] IntPtr wParam, 
	[OptionalAttribute] IntPtr lParam, 
	BroadcastSystemMessageExInfo% refMsgInfo
)

F#Request Example

[<DllImportAttribute("User32.dll", CharSet = CharSet.Auto, SetLastError = true)>]
static member BroadcastSystemMessageEx : 
        flags : BroadcastSystemMessageFlags * 
        refInfo : BroadcastSystemMessageInfo byref * 
        msg : uint32 * 
        [<OptionalAttribute>] wParam : IntPtr * 
        [<OptionalAttribute>] lParam : IntPtr * 
        refMsgInfo : BroadcastSystemMessageExInfo byref -> int

ASP.NETRequest Example

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

Parameters

flags BroadcastSystemMessageFlags: The broadcast options.
refInfo BroadcastSystemMessageInfo: A pointer to a variable that contains and receives information about the recipients of the message.
When the function returns, this variable receives a combination of these values identifying which recipients actually received the message.
msg UInt32: The message to be sent. See WindowMessages.
wParam IntPtr (Optional): Additional message-specific information.
lParam IntPtr (Optional): Additional message-specific information.
refMsgInfo BroadcastSystemMessageExInfo: A pointer to a BroadcastSystemMessageExInfo structure that contains additional information if the request is denied and flags is set to Query.

Return Value

Int32
If the function succeeds, the return value is a positive value.

If the function is unable to broadcast the message, the return value is –1.

If the flags parameter is Query and at least one recipient returned BROADCAST_QUERY_DENY to the corresponding message, the return value is zero.

To get extended error information, call GetLastWin32Error.

Remarks

https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-broadcastsystemmessageexa

User32BroadcastSystemMessageEx(BroadcastSystemMessageFlags, BroadcastSystemMessageInfo, UInt32, IntPtr, IntPtr, BroadcastSystemMessageExInfo) Method

Definition

Parameters

Return Value

Remarks

See Also

Reference