typedef struct _BENDINGDLGPARAMS 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT nValue; 
   POINT ptCenter; 
   COLORREF crFill; 
   L_UINT uBendingFlags; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 

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



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




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)".


Amount of stretching, where positive values stretch the pixels toward edges, and negative values stretch the pixels toward the center. Possible values range from −500 to 500.


A POINT structure that contains the center of the arc. This is ignored when either BND_HORZ or BND_VERT is set in the uBendingFlags member. 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 for any 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.


Flags that indicate how to handle peripherally exposed areas, how to handle centrally exposed areas and the type of bending. You can use a bitwise OR (|) to specify one flag from each group.

Value Meaning
Handling peripherally 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_NOCHG [0x0002] do not change or process exposed areas.
Handling an exposed center
FILL_ROT [0x0000] Rotate the image inside the arc pattern.
FILL_WOUTROT [0x0010] Fill the exposed center as you would any other exposed area. This is determined by setting the FILL_CLR, FILL_RPT or FILL_NOCHG flags. This flag is ignored if the nValue is negative.
How the bitmap is bent
BND_NORM [0x0000] Stretch the image along the vertical and horizontal planes.
BND_HORZ [0x0100] Stretch the image along the horizontal plane.
BND_VERT [0x0200] Stretch the image along the vertical plane.


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

Value Meaning
DLG_BENDING_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
DLG_BENDING_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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LEADTOOLS Common Dialog C++ Class Library Help