注册文件关联例子(win32)

 注册文件关联例子

最近做个项目，要关联自己的文件格式。所以参考了以下代码。做个备忘。

char keybuf[_MAX_PATH * 2 + 20];
  HKEY hKey, hKey2;
  if ( RegCreateKey(HKEY_CLASSES_ROOT, ".vnc", &hKey)  == ERROR_SUCCESS ) {
    RegSetValue(hKey, NULL, REG_SZ, "VncViewer.Config", 0);
    RegCloseKey(hKey);
  } else {
    vnclog.Print(0, "Failed to register .vnc extension/n");
  }

  char filename[_MAX_PATH];
  if (GetModuleFileName(NULL, filename, _MAX_PATH) == 0) {
    vnclog.Print(0, "Error getting vncviewer filename/n");
    return;
  }
  vnclog.Print(2, "Viewer is %s/n", filename);

  if ( RegCreateKey(HKEY_CLASSES_ROOT, "VncViewer.Config", &hKey)  == ERROR_SUCCESS ) {
    RegSetValue(hKey, NULL, REG_SZ, "VNCviewer Config File", 0);
  
    if ( RegCreateKey(hKey, "DefaultIcon", &hKey2)  == ERROR_SUCCESS ) {
      sprintf(keybuf, "%s,0", filename);
      RegSetValue(hKey2, NULL, REG_SZ, keybuf, 0);
      RegCloseKey(hKey2);
    }
    if ( RegCreateKey(hKey, "Shell//open//command", &hKey2)  == ERROR_SUCCESS ) {
      sprintf(keybuf, "/"%s/" -config /"%%1/"", filename);
      RegSetValue(hKey2, NULL, REG_SZ, keybuf, 0);
      RegCloseKey(hKey2);
    }

    RegCloseKey(hKey);
  }

  if ( RegCreateKey(HKEY_LOCAL_MACHINE,
                    "Software//Microsoft//Windows//CurrentVersion//App Paths//vncviewer.exe",
                    &hKey)  == ERROR_SUCCESS ) {
    RegSetValue(hKey, NULL, REG_SZ, filename, 0);
    RegCloseKey(hKey);
  }