This page was last modified 10:02, 14 November 2007.
KIS000563 - Camera shutter key (EKeyCamera events) cannot be used in 3rd party applications
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Camera shutter key (EKeyCamera events) cannot be used in 3rd party applications
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KIS000563
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Overview
| The camera shutter key cannot be used for capturing images, because it is reserved for the system camera application.
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Category
| Symbian C++
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Subcategory
| Camera & Video
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Reported against
| S60 2nd Edition, S60 3rd Edition
All devices that have the camera shutter key (e.g., Nokia N70, Nokia N90)
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Date identified
| January 25, 2007, update March 8, 2007
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Symptoms
| -
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Detailed description
| The SDK header eikon.hrh lists the key code for the camera shutter key (EKeyCamera). However, key events from EKeyCamera are consumed and sent to the system camera application only, and cannot be captured by 3rd parties.
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How to reproduce
| -
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Solution
| No known solution (for EKeyCamera events).
Devices with AutoFocus capability:
Devices that have a camera with AutoFocus capability use a different key code for the shutter key. Events from this key can be captured if the application has SwEvent capability.
#define EKeyCameraShutter 0xf883
Events from this key need to be explicitly requested from the window server:
// Capture events from the camera shutter key (SwEvent capability required)
iCameraKeyHandle = iCoeEnv->RootWin().CaptureKey( EKeyCameraShutter, 0, 0 );
The return value iCameraKeyHandle (TInt32) is used for canceling the key capture request, typically when exiting the application:
if ( iCameraKeyHandle >= 0 )
{
iCoeEnv->RootWin().CancelCaptureKey( iCameraKeyHandle );
}
Focus key events:
Pressing the shutter key halfway down generates separate key events. EEventKeyDown and EEventKeyUp events from this key can be detected with the following scan code:
#define EStdKeyCameraFocus 0xe2
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