嗨,我正在尝试检查用户机器上的 COM 端口,然后通过 C++ 中的自定义操作将它们插入到列表框中。虽然它没有显示信息并且当我调试时它只是说“函数执行失败”这是我的列表框的 Wix 代码:
<Control Id="ListBoxID" Type="ListBox" Property="COMPORT" Width="80" Height="40" X="80" Y="165" Indirect="no">
<ListBox Property="COMPORT">
</ListBox>
<Condition Action="hide">(DEVICETYPE = "1")</Condition>
<Condition Action="show">(DEVICETYPE = "2")</Condition>
<Condition Action="show">(DEVICETYPE = "3")</Condition>
<Condition Action="hide">(DEVICETYPE = "4")</Condition>
</Control>
这是我的自定义操作:
extern "C" UINT __stdcall GetDatascanPort(MSIHANDLE hInstall)
{
HRESULT hr = S_OK;
UINT er = ERROR_SUCCESS;
HKEY keyHandle;
DWORD i,openStatus,cb_value_buffer,cb_buffer,dwType;
char value_buffer[100],buffer[10];
MSIHANDLE hTable = NULL;
MSIHANDLE hColumns = NULL;
MSIDBERROR insertError = MSIDBERROR_NOERROR;
hr = WcaInitialize(hInstall, "GetDatascanPort");
ExitOnFailure(hr, "Failed to initialize");
WcaLog(LOGMSG_STANDARD, "Initialized.");
if (RegCreateKeyEx( HKEY_LOCAL_MACHINE,
"HARDWARE\\DEVICEMAP\\SERIALCOMM",
0,
"",
REG_OPTION_NON_VOLATILE,
KEY_QUERY_VALUE,
default_sa(),
&keyHandle,
&openStatus ) == ERROR_SUCCESS )
{
for (i=0;;i++)
{
cb_value_buffer = sizeof(value_buffer);
cb_buffer = sizeof(buffer);
if (RegEnumValue(keyHandle,
i,
value_buffer,
&cb_value_buffer,
NULL,
&dwType,
(unsigned char *) buffer,
&cb_buffer) != ERROR_SUCCESS)
break;
if (dwType != REG_SZ || strlen(buffer) > 6)
continue;
hr = WcaAddTempRecord(&hTable, &hColumns, L"ListBox",&insertError, 0, 4, L"COMPORT", 1, 0, buffer);
ExitOnFailure(hr, "failed to set COMPORT");
}
RegCloseKey(keyHandle);
if (hTable)
MsiCloseHandle(hTable);
if (hColumns)
MsiCloseHandle(hColumns);
return WcaFinalize(hr);
}
LExit:
er = SUCCEEDED(hr) ? ERROR_SUCCESS : ERROR_INSTALL_FAILURE;
return WcaFinalize(er);
}
任何人都可以帮助我吗?谢谢
编辑:我让它更新我的列表框,但它不清晰,奇怪的符号。我像这样将我的 char 更改为 CString ,这似乎除了显示不正确之外还有效。
CString ComPort;
ComPort = buffer;
hr = WcaAddTempRecord(&hTable, &hColumns, L"ListBox",&insertError, 0, 4, L"COMPORT", 1, ComPort, ComPort);
ExitOnFailure(hr, "failed to set COMPORT");
此外,目标计算机可能有串行端口,在 for 循环中将它们全部与我的函数一起列出的最佳方法是什么?
谢谢