typedef struct _SHEARDLGPARAMS 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_INT nAngle; 
   L_BOOL bHorizontal; 
   COLORREF crBack; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 

The SHEARDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImage::DoModalShear 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.


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


A variable to be updated with the angle or shear entered in the dialog. Positive values are for clockwise angles; negative values are for counterclockwise angles. The angle is expressed in hundredths of degrees. Possible values range from -4500 - 4500.


A flag that indicates the shear direction. Possible values are:

Value Meaning
TRUE Horizontal shear.
FALSE Vertical shear.


A variable to be updated with the background fill color entered in the dialog. 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.


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

Value Meaning
DLG_SHEAR_AUTOPROCESS [0x00000001] process the image on OK. The pBitmap member of this structure should contain a valid bitmap.
DLG_SHEAR_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
DLG_SHEAR_SHOW_PREVIEW [0x00000004] show preview of the image in the dialog. The pBitmap member of this structure should contain a valid bitmap.
DLG_SHEAR_SHOW_BACKCOLOR [0x00000008] dialog will show the background color button.
DLG_SHEAR_SHOW_HORIZONTAL [0x00000010] dialog will show the horizontal check box.





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