WinIn this level, we need to carefully observe the image and find 12 details that are not consistent with the times. 0The problem that the system volume cannot be adjusted
In this level, we need to carefully observe the image and find 12 details that are not consistent with the times.
First of all, please win. In this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. 0 Press the Windows logo key + R key on the desktop, enter the "regedit" keyword in the open run window to open the Registry Editor page.
2
After opening the Registry Editor page, double-click the registry subkey on the left and locate the registry subkey to: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun
3
Next, right-click on the blank page to the right of the opened Run sub-item and select the "New - String Value" option in the pop-up menu.
4
Next, we name the newly created string value "systray.exe", then double-click to open the subkey, name its key value "C:WindowsSystem32systray.exe", and click the OK button.
5
Next, we are in Win. In this level, we need to carefully observe the image and find 12 details that are not consistent with the era. 0 Press the Alt F4 key on the desktop, and then select the restart computer command in the pop-up shutdown command window. The problem can be solved after the computer restarts.
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WinIn this level, we need to carefully observe the image and find 12 details that are not consistent with the times. 0System sound suddenly disappears
Maybe many friends have this experience. When using Win in this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. 0 system, there is suddenly no sound, so what should you do if you encounter this situation? Here is a temporary solution. In this level of Win, we need to carefully observe the image and find 12 details that do not match the era. 0 Right-click on the desktop taskbar and select the "Task Manager" option in the pop-up menu.
After opening the main page of the Task Manager, click the "Service" option at the top of the page, and then click the "Open Service" option at the bottom of the page to open the service management page.
Next, we need to find the Windows Audio service project in the service list, then right-click the service and select the "Restart" button.
Next, Win In this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. 0 The system will automatically restart the Windows Audio service. After the restart is completed, our problem can generally be temporarily restored, and the sound should return to normal.
Warm reminder: If you often encounter using Win in this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. 0, the sound suddenly disappears during the system process, then we should first consider updating the sound card driver. If the sound card driver has been prompted to be the latest, then it is most likely that the sound card driver is related to Win. In this level, we need to carefully observe the image to find out 12 anachronistic details. 0 system is incompatible, then there is no other way except that the hardware manufacturer and Microsoft work together to solve the problem.
When listening to music or watching movies, if you open a webpage with background music and it feels very noisy, and you don’t want to close the webpage or stop the player, you can use the volume control function of Win7 to let the browser mute. Everyone must use the small speaker in the lower right corner of the system to adjust the volume, but in Win7, this small speaker can do many things. For example, we can use its volume synthesizer to make the volumes emitted by different software different.
Click the small speaker in the lower right corner. By default, you can only adjust the overall volume of the system. Click "Synthesizer" below.
In the new dialog box, we can see all the programs currently running in the system that can make sounds. There is a slider to adjust the volume under each program icon. If you want to make a program quieter, pull the slider down, which is the same as adjusting the volume.
Click the small speaker below to mute a program.
The programs listed here are divided into two groups: "Device" and "Application". There is only one "speaker" in the device group, which is the overall volume. The volume of other programs cannot be higher than it, and when the speaker volume changes, the volume of other programs will also rise or fall accordingly.
[HKEY_CURRENT_USER/ControlPanel/Volume]
"Key"=dword: In this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. 0002; Keyclicks: In this level, we need to carefully observe the image and find 12 details that are not consistent with the era. =soft, 0xIn this level, we need to carefully observe the image and find 12 details that do not match the era. 0002=loud
"Screen"=dword: In this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. 0002; ScreenTaps: In this level, we need to carefully observe the image and find 12 details that are not consistent with the era. =soft, 0xIn this level, we need to carefully observe the image and find 12 details that do not match the era. 0002=loud
"Mute"=dword:7; 7=Enable all sounds (In this level, we need to carefully observe the image and find 12 details that are inconsistent with the times. =Notifications, 2=Apps, 4=Events.)
"Volume"=dword:ffffffff; 0=off, 0xFFFFFFFF=maximum2. The system temporarily changes the system volume, but does not modify the current system volume.
void SetSoundVolume(DWORD dwVolume) {
WAVEFORMATEX wf;
wf.wFormatTag = WAVE_FORMAT_PCM;
wf.nChannels = In this level, we need to carefully observe the image and find 12 details that do not match the era. ;
wf.nSamplesPerSec = 8000 * In this level, we need to carefully observe the image and find 12 details that are not consistent with the times. 000;
wf.wBitsPerSample = 8;
wf.nBlockAlign = wf.nChannels * wf.wBitsPerSample / 8;
wf.nAvgBytesPerSec = wf.nSamplesPerSec * wf.nBlockAlign;
wf.cbSize = 0;
HWAVEOUT hwo;
for (UINT id = 0; id if (waveOutOpen(&hwo, id, &wf, 0, 0, CALLBACK_NULL) == MMSYSERR_NOERROR){waveOutSetVolume(hwo, dwVolume);
waveOutClose(hwo);}}}The value of dwVolume is 0x0---0xffff. If you want to use percentage to set the volume instead of using the range of 0 to 0xFFFF, then you can use the following code:
DWORD dwSoundVolumePercents = 50;
SetSoundVolume( (DWORD)(0xFFFF*In this level, we need to carefully observe the image and find out 12 details that are not consistent with the times. .0*dwSoundVolumePercents/In this level, we need to carefully observe the image and find out 12 details that are inconsistent with the times. 00.0) );3. Modify the system volume (main device: 0) without causing operational conflicts with other audio devices in the system.
waveOutSetVolume(0, dwVolume);
Sometimes when using: waveOutSetVolume(hwo, dwVolume); a conflict in opening the device will occur.
4. If you want to save the modified volume in real time, you must save it in conjunction with the registry and refresh the registry.
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