typedef struct _ZOOMWAVEDLGPARAMS 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_UINT uAmplitude; 
   L_UINT uFrequency; 
   L_INT nPhase; 
   L_UINT uZoomFactor; 
   POINT ptCenter; 
   COLORREF crFill; 
   L_UINT uZoomWaveFlags; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 

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



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


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


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)".


Zoom wave magnitude. The value must be greater than zero.


The number of repeated waves along the radial line.The value must be greater than zero.


Wave phase shift. The valid range is from −36000 to 36000.


The percentage the wave grows as it moves from the image center. The valid range is from 0 to 100.


POINT structure that contains the center point from which the wave is zoomed. The center point must be defined inside the bitmap, or inside the region, if the bitmap has a region.


The COLORREF value that specifies the fill color of undefined area. You can specify a COLORREF value, such as the return value of the Windows RGB macro, or you can use the PALETTEINDEX macro to specify a palette color.


Flags that indicate how exposed areas will be handled. Possible values are:

Value Meaning
FILL_CLR [0x0000] fill exposed areas with the color in crFill.
FILL_RPT [0x0001] stretch the edges of the image to fill exposed areas.
FILL_NOCHANGE [0x0002] do not change exposed areas.


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

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





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