POLARDLGPARAMS

typedef struct _POLARDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   COLORREF crFill; 
   L_UINT uPolarFlags; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} POLARDLGPARAMS,  * LPPOLARDLGPARAMS; 

The POLARDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalPolar 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)".

crFill

The COLORREF value that specifies the color used to fill exposed areas. 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.

uPolarFlags

Flags that indicate how exposed areas will be handled and the conversion type. You can use a bitwise OR (|) to specify one flag from each group. Possible values are:

Value Meaning
How to handle exposed areas
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.
Conversion type
CART_TO_POL [0x0000] convert the image from Cartesian (rectangular) coordinates to polar coordinates.
POL_TO_CART [0x0010] convert the image from polar coordinates to Cartesian (rectangular) coordinates.

uDlgFlags

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

Value Meaning
DLG_POLAR_AUTOPROCESS [0x00000001] process the image on OK. The pBitmap member of this structure should contain a valid bitmap.
DLG_POLAR_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
DLG_POLAR_SHOW_PREVIEW [0x00000004] show a preview of the image in the dialog. The pBitmap member of this structure should contain a valid bitmap.
DLG_POLAR_SHOW_TOOL_ZOOMLEVEL [0x00000008] show the "Zoom to fit" and "Zoom Normal" toolbar buttons. The DLG_POLAR_SHOW_PREVIEW flag must be set in order to show these buttons.
DLG_POLAR_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
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Common Dialog C++ Class Library Help