The Preview Control connects to a Web(USB) camera and displays
video. It provides properties, methods, and events to open start,
stop, pause, and resume the video. Snapshot can be taken from the
video.
* This control is a Delphi control. It cannot be used in
C+Builder.
Inheritance
TCustomControl
Unit
IkPreview
Property List
| Custom Properties | Explanation |
|---|---|
| Appearance | Sets the appearance of the Preview Control's border |
| BitCount | Refers to the number of bits per pixel |
| BorderColor | Sets the color of Preview Control's the border. |
| BorderVisible | Sets whether or not the border of the Preview Control is displayed |
| Color | Sets the background color for the Preview Control |
| Compression | Refers to the compression format of the bitmap |
| Cursor | Sets the shape of the mouse cursor when the mouse is within the Preview Control |
| Enabled | Sets whether or not the mouse and keyboard events of the Preview Control are enabled |
| ErrorStatus | Retrieves the type of error that has occurred |
| FrameRate | Sets the frame rate |
| Handle | Refers to the window handle of the Preview Control |
| MaximumFrameRate | The maximum frame rate |
| MinimumFrameRate | The minimum frame rate |
| State | Retrieves the current state of the Preview Control |
| VideoDevices | Retrieves the name of the video device |
| VideoSize | Retrieves the height and width of the video |
| VideoSubType | The GUID string that specifies the subtype of the media sample |
Differences from ImageKit10 ActiveX
Properties that have been deleted: MouseCursorFile
Properties that have been changed:
BackColor --> Color
HWND --> Handle
MouseCursorType --> Cursor
VideoHeight, VideoWidth --> VideoSize
Method List
| Custom Method | Explanation |
|---|---|
| Close | Closes the video file |
| GetStreamFormat | Retrieves the specified format function |
| GetStreamFormats | Retrieves the specified set of format functions |
| GetVideoDevices | Retrieves the video device name |
| Open | Connects to the Web(USB) camera in preview mode |
| Pause | Pauses the preview or restarts a paused preview |
| SetStreamFormat | Sets the specified format functions |
| ShowCapturePinDialog | Displays the capture pin dialog |
| ShowFilterDialog | Displays the filter dialog |
| Start | Starts the preview |
| Stop | Stops the preview |
| TakeSnapshot | Takes a snapshot from the preview |
Event List
| Custom Event | Explanation |
|---|---|
| Snapshot | Generated when a snapshot is taken from the preview |