ShowEdgeDetectorDlg method (LEADDlgImgEffect Control)
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Builder Syntax |
int ShowEdgeDetectorDlg(TWinControl* AOwnerCtrl); |
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Delphi Syntax |
Function ShowEdgeDetectorDlg (AOwnerCtrl: TWinControl ): L_INT; |
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Overview |
Refer to Using Imaging Common Dialogs. |
Remarks
Displays the Edge Detector dialog box, and gets the options for the EdgeDetector method.
The layout and action of the dialog depends on the flags set in the DlgFlags property. Possible options are:
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Value |
Meaning |
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DLG_EDGEDETECTOR_AUTOPROCESS |
[$00000001] Process the image on OK. The LEADImage property must be assigned a Main Control containing a valid bitmap before calling this method. |
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DLG_EDGEDETECTOR_SHOW_CONTEXTHELP |
[$00000002] Dialog should contain a context sensitive help icon. |
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DLG_EDGEDETECTOR_SHOW_PREVIEW |
[$00000004] Show a preview of the image in the dialog. The LEADImage property must be assigned a Main Control containing a valid bitmap before calling this method. |
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DLG_EDGEDETECTOR_SHOW_TOOL_ZOOMLEVEL |
[$00000008] Show the "Zoom to fit" and "Zoom Normal" toolbar buttons. The DLG_EDGEDETECTOR_SHOW_PREVIEW flag must be set in order to show these buttons. |
If you include DLG_EDGEDETECTOR_AUTOPROCESS or DLG_EDGEDETECTOR_SHOW_PREVIEW in the DlgFlags property, the LEADImage property must be assigned a Main Control containing a valid bitmap before calling this method.
The properties associated with this dialog box are:
Threshold property.
EdgeDetectionFilterType property.
To include a Help button in the dialog, set the ShowHelpButton property to TRUE.
The Edge Detector dialog can be seen below:
See Also
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Elements: |
EdgeDetector method, Threshold property, EdgeDetectionFilterType property, LEADImage property |
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Topics: |