/// <summary>
/// 将指定字符串数据映射到内存地址,然后返回这个地址
/// </summary>
/// <param name="szTextData">指定字符串数据</param>
/// <returns>IntPtr</returns>
public static IntPtr StringToPtr(string szTextData)
{
if (GlobalMethods.Misc.IsEmptyString(szTextData))
{
return(IntPtr.Zero);
}
try
{
byte[] byteTextData = Convert.GetDefaultEncoding().GetBytes(szTextData);
IntPtr hTextData = System.Runtime.InteropServices.Marshal.AllocHGlobal(byteTextData.Length);
System.Runtime.InteropServices.Marshal.Copy(byteTextData, 0, hTextData, byteTextData.Length);
NativeStructs.COPYDATASTRUCT copyDataStruct = new NativeStructs.COPYDATASTRUCT();
copyDataStruct.dwData = IntPtr.Zero;
copyDataStruct.lpData = hTextData;
copyDataStruct.cbData = byteTextData.Length;
hTextData = System.Runtime.InteropServices.Marshal.AllocHGlobal(System.Runtime.InteropServices.Marshal.SizeOf(copyDataStruct));
System.Runtime.InteropServices.Marshal.StructureToPtr(copyDataStruct, hTextData, true);
return(hTextData);
}
catch (Exception ex)
{
LogManager.Instance.WriteLog("GlobalMethods.StringToPtr", new string[] { "szTextData" }, new object[] { szTextData }, ex);
return(IntPtr.Zero);
}
}
/// <summary>
/// 将指针指向的地址上的数据转换为字符串
/// </summary>
/// <param name="hTextData">指针指向的地址</param>
/// <returns>string</returns>
public static string PtrToString(IntPtr hTextData)
{
if (hTextData == IntPtr.Zero)
{
return(null);
}
try
{
NativeStructs.COPYDATASTRUCT stTextData = (NativeStructs.COPYDATASTRUCT)
System.Runtime.InteropServices.Marshal.PtrToStructure(hTextData, typeof(NativeStructs.COPYDATASTRUCT));
byte[] byteTextData = new byte[stTextData.cbData];
System.Runtime.InteropServices.Marshal.Copy(stTextData.lpData, byteTextData, 0, byteTextData.Length);
return(Convert.GetDefaultEncoding().GetString(byteTextData));
}
catch (Exception ex)
{
LogManager.Instance.WriteLog("GlobalMethods.PtrToString", new string[] { "hTextData" }, new object[] { hTextData }, ex);
return(null);
}
}
/// <summary>
/// ��ָ���ַ�������ӳ�䵽�ڴ��ַ,Ȼ�������ַ
/// </summary>
/// <param name="szTextData">ָ���ַ�������</param>
/// <returns>IntPtr</returns>
public static IntPtr StringToPtr(string szTextData)
{
if (GlobalMethods.Misc.IsEmptyString(szTextData))
return IntPtr.Zero;
try
{
byte[] byteTextData = Convert.GetDefaultEncoding().GetBytes(szTextData);
IntPtr hTextData = System.Runtime.InteropServices.Marshal.AllocHGlobal(byteTextData.Length);
System.Runtime.InteropServices.Marshal.Copy(byteTextData, 0, hTextData, byteTextData.Length);
NativeStructs.COPYDATASTRUCT copyDataStruct = new NativeStructs.COPYDATASTRUCT();
copyDataStruct.dwData = IntPtr.Zero;
copyDataStruct.lpData = hTextData;
copyDataStruct.cbData = byteTextData.Length;
hTextData = System.Runtime.InteropServices.Marshal.AllocHGlobal(System.Runtime.InteropServices.Marshal.SizeOf(copyDataStruct));
System.Runtime.InteropServices.Marshal.StructureToPtr(copyDataStruct, hTextData, true);
return hTextData;
}
catch (Exception ex)
{
LogManager.Instance.WriteLog("GlobalMethods.StringToPtr", new string[] { "szTextData" }, new object[] { szTextData }, ex);
return IntPtr.Zero;
}
}
