SWIRLDLGPARAMS

typedef struct _SWIRLDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT nAngle; 
   POINT ptCenter; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} SWIRLDLGPARAMS,  * LPSWIRLDLGPARAMS; 

The SWIRLDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalSwirl function. After the user closes the dialog box, this structure is updated with information about the user's selections.

Members

uStructSize

Size of this structure, in bytes. Use the sizeof operator to calculate this value.

pBitmap

Pointer to the bitmap handle that references the bitmap used for preview or processing.

bZoomToFit

Flag that indicates the initial zoom level for previewing the image. Possible values are:

Value Meaning
TRUE Set the initial zoom level to "Zoom to fit".
FALSE Set the initial zoom level to "Normal (1:1)".

nAngle

The degree of rotation. This value is in (+/-) degrees (0, 360, 720, etc.).

ptCenter

POINT structure that contains the center of the swirl. The center point must be defined inside the bitmap, or inside the region, if the bitmap has a region.

uDlgFlags

User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:

Value Meaning
DLG_SWIRL_AUTOPROCESS [0x00000001] process the image on OK. The pBitmap member of this structure should contain a valid bitmap.
DLG_SWIRL_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
DLG_SWIRL_SHOW_PREVIEW [0x00000004] show a preview of the image in the dialog. The pBitmap member of this structure should contain a valid bitmap.
DLG_SWIRL_SHOW_TOOL_ZOOMLEVEL [0x00000008] show the "Zoom to fit" and "Zoom Normal" toolbar buttons. The DLG_SWIRL_SHOW_PREVIEW flag must be set in order to show these buttons.
DLG_SWIRL_SHOW_APPLY [0x00000080] Show the Apply button in the dialog. The dialog will not apply any effect unless the user presses the Apply button.

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Help Version 20.0.2019.9.19
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