MT_DecodeHandle_PostStartMsg

Datalogic .NET SDK

PostStartMsg (Method)

Syntax

public bool PostStartMsg(MessageWindow wnd, uint uDataMsg);

Class : DecodeHandle

Namespace : Datalogic.API

Assembly : Datalogic.API.DLL

Description

Posts a request to be notified when a scan attempt is started.

Parameters Table

	Type	Parameter	Description
[in]	MessageWindow	wnd	A reference to an instance of the Microsoft.WindowsCE.Forms.MessageWindow class whose window procedure (WinProc) is to receive a message when a scan attempt is started.
[in]	uint	uDataMsg	Specifies the message to be posted when the scan attempt is started. This should be a value of WM_USER (defined in winuser.h) or higher.

[return]	bool		A value of TRUE is returned on success, otherwise FALSEis returned to indicate failure.
[on error]	FALSE

Example

private void btnSetPostStart_Click(object sender, EventArgs e)

{

// hDcd = new DecodeHandle(...); Global instance of DecodeHandle class

bool bPostSuccess = hDcd.PostStartMsg(wndMsg, Constants.WM_STARTSCAN);

MySetTextBox("Set-PostStartMsg");

}

Remarks

For each decoding device, only one event or message can be in effect at any time.

For example if a start event (Datalogic.API.DecodeEvent.ScanStart) is in use, then you need to stop listening to the event (Datalogic.API.DecodeEvent.StopScanListener), or cancel the notification before a message can be used. If a previous message was posted, then you need to cancel the start notification to post the new start windows message.