C#中USB轉串列埠的拔插捕獲（一）
阿新 • • 發佈：2019-01-06
//
usb訊息定義
public const int WM_DEVICE_CHANGE = 0x219;
public const int DBT_DEVICEARRIVAL = 0x8000;
public const int DBT_DEVICE_REMOVE_COMPLETE = 0x8004;
/// <summary>
/// 檢測USB串列埠的拔插
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_DEVICE_CHANGE) // 捕獲USB裝置的拔出訊息WM_DEVICECHANGE
{
switch (m.WParam.ToInt32())
{
case DBT_DEVICE_REMOVE_COMPLETE: // USB拔出
public const int WM_DEVICE_CHANGE = 0x219;
public const int DBT_DEVICEARRIVAL = 0x8000;
public const int DBT_DEVICE_REMOVE_COMPLETE = 0x8004;
/// <summary>
/// 檢測USB串列埠的拔插
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_DEVICE_CHANGE) // 捕獲USB裝置的拔出訊息WM_DEVICECHANGE
{
switch (m.WParam.ToInt32())
{
case DBT_DEVICE_REMOVE_COMPLETE: // USB拔出