QT 自动获取可用串口
- 本来想直接用Settings来获取的,但是串口信息类似 "\Device\Serial0",死活获取不了,用了转义、反斜杠还是获取不到,所以就放弃了,网上好像也没有获取成功的。
- 所以就用winapi来获取了,参考了网上源码
- cpp文件
- /*
- 初始化串口
- */
- void MainWindow::init_comm()
- {
- QString path = "HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\SERIALCOMM";
- QSettings *settings = new QSettings(path, QSettings::NativeFormat);
- QStringList key = settings->allKeys();
- QStringList comlist ;
- QStringList Baudlist ;
- // QStringList Paritylist ;
- // QStringList DataBitslist;
- // QStringList StopBitslist;
- // QStringList ControlFlowlist;
- comlist.clear();
- /* 取串口名 */
- for (int i=0; i<key.size(); i++) {
- comlist << getcomm(i, "value");
- }
- ui->ComPortcomboBox->addItems(comlist);
- ....
- }
- /*
- 读取键值
- */
- QString MainWindow::getcomm(int index, QString keyorvalue)
- {
- QString commresult;
- if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("HARDWARE\\DEVICEMAP\\SERIALCOMM"), 0, KEY_READ, &hKey) != 0) {
- QString error="Cannot open regedit!";//无法打开注册表时返回error
- return error;
- }//if(::RegOpenKeyEx(HKEY_LOCAL_MACHINE,subkey,0,KEY_READ,&hKey)!=0)
- QString keymessage;//键名
- QString message;
- QString valuemessage;//键值
- indexnum = index;//要读取键值的索引号
- keysize = sizeof(keyname);
- valuesize = sizeof(keyvalue);
- if (RegEnumValue(hKey, indexnum, keyname, &keysize, 0, &type, (BYTE*)keyvalue, &valuesize) == 0) { //列举键名和值
- for (int i=0; i<(int)keysize; i++) {
- message = keyname[i];
- keymessage.append(message);
- }
- for (int j=0; j<(int)valuesize; j++) {
- if (keyvalue[j] != 0x00) {
- valuemessage.append(keyvalue[j]);
- }
- }
- if (keyorvalue == "key") {
- commresult = keymessage;
- }
- if (keyorvalue == "value") {
- commresult=valuemessage;
- }
- } else {
- commresult = "nokey";
- }
- RegCloseKey(hKey);//关闭注册表
- return commresult;
- }
- .h文件
- #include <QSettings>
- #include <qt_windows.h>
- HKEY hKey;
- LPCWSTR subkey;
- wchar_t keyname[256]; //键名数组
- char keyvalue[256]; //键值数组
- DWORD keysize,type,valuesize;
- int indexnum;
http://blog.csdn.net/emdfans/article/details/38588537