GRADIENTDLGPARAMS

typedef struct _GRADIENTDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_UINT uStyle; 
   COLORREF crStart; 
   COLORREF crEnd; 
   L_UINT uSteps; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} GRADIENTDLGPARAMS,  * LPGRADIENTDLGPARAMS; 

The GRADIENTDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogEffect::DoModalGetGradient 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

Ignored.

uStyle

The gradient style. For a list of possible values, refer to Effect Gradient Styles.

crStart

The starting color of the gradient. 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.

crEnd

The ending color of the gradient. 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.

uSteps

The number of steps in the gradient.

uDlgFlags

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

Value Meaning
DLG_GRADIENT_SHOW_CONTEXTHELP [0x00000001] dialog should contain a context sensitive help icon.
DLG_GRADIENT_SHOW_PREVIEW [0x00000002] show a preview of the image in the dialog. The pBitmap member of this structure should contain a valid bitmap.
DLG_GRADIENT_AUTOPREVIEW [0x00000004] auto preview when options change
DLG_GRADIENT_STARTCOLOR [0x00000008] start color is an option
DLG_GRADIENT_ENDCOLOR [0x00000010] end color is an option
DLG_GRADIENT_STEPS [0x00000020] gradient steps is an option
DLG_GRADIENT_NO_TREEVIEW [0x00000040] DO NOT use TreeView
DLG_GRADIENT_CLASS_LINEAR [0x00000080] linear gradients are an option
DLG_GRADIENT_CLASS_ANGULAR [0x00000100] angular gradients are an option
DLG_GRADIENT_CLASS_RECTANGULAR [0x00000200] rectangular gradients are an option
DLG_GRADIENT_CLASS_ELLIPTICAL [0x00000400] elliptical gradients are an option
DLG_GRADIENT_CLASS_CONICAL [0x00000800] conical gradients are an option

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Help Version 20.0.2019.9.19
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