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The following are possible values for the LPaintEffect::DrawGradient function's uStyle parameter, which specifies the gradient direction (transitioning from one color to another):
| Value | Meaning |
|---|---|
| Linear gradient class: | |
| EFX_GRADIENT_LINE_L_TO_R | Line left to right |
| EFX_GRADIENT_LINE_R_TO_L | Line right to left |
| EFX_GRADIENT_LINETTO_B | Line top to bottom |
| EFX_GRADIENT_LINE_B_TO_T | Line bottom to top |
| EFX_GRADIENT_LINE_LT_TO_RB | Line left-top to right-bottom |
| EFX_GRADIENT_LINE_LB_TO_RT | Line left-bottom to right-top |
| EFX_GRADIENT_LINE_RT_TO_LB | Line right-top to left-bottom |
| EFX_GRADIENT_LINE_RB_TO_LT | Line right-bottom to left-top |
| EFX_GRADIENT_LINE2_L_AND_R_TO_C | Line2 left and right to center |
| EFX_GRADIENT_LINE2_C_TO_L_AND_R | Line2 center to left and right |
| EFX_GRADIENT_LINE2TAND_B_TO_C | Line2 top and bottom to center |
| EFX_GRADIENT_LINE2_C_TOTAND_B | Line2 center to top and bottom |
| EFX_GRADIENT_LINE2_LT_AND_RB_TO_C | Line2 left-top and right-bottom to center |
| EFX_GRADIENT_LINE2_C_TO_LT_AND_RB | Line2 center to left-top and right-bottom |
| EFX_GRADIENT_LINE2_RT_AND_LB_TO_C | Line2 right-top and left-bottom to center |
| EFX_GRADIENT_LINE2_C_TO_RT_AND_LB | Line2 center to right-top and left-bottom |
| EFX_GRADIENT_LINE_MAX | Number of gradients in this class. |
| Angular gradient class: | |
| EFX_GRADIENT_ANGLE_TO_LT | Angle to left-top |
| EFX_GRADIENT_ANGLE_TO_LB | Angle to left-bottom |
| EFX_GRADIENT_ANGLE_TO_RT | Angle to right-top |
| EFX_GRADIENT_ANGLE_TO_RB | Angle to right-bottom |
| EFX_GRADIENT_ANGLE_FROM_LT | Angle from left-top |
| EFX_GRADIENT_ANGLE_FROM_LB | Angle from left-bottom |
| EFX_GRADIENT_ANGLE_FROM_RT | Angle from right-top |
| EFX_GRADIENT_ANGLE_FROM_RB | Angle from right-bottom |
| EFX_GRADIENT_ANGLE_MAX | Number of gradients in this class. |
| Rectangular gradient class: | |
| EFX_GRADIENT_RECTANGLE_TO_C | Rectangle to center |
| EFX_GRADIENT_RECTANGLE_FROM_C | Rectangle from center |
| EFX_GRADIENT_RECTANGLE_MAX | Number of gradients in this class. |
| Elliptical gradient class: | |
| EFX_GRADIENT_ELLIPSE_TO_C | Ellipse to center |
| EFX_GRADIENT_ELLIPSE_FROM_C | Ellipse from center |
| EFX_GRADIENT_ELLIPSE_MAX | Number of gradients in this class. |
| Conical gradient class: | |
| EFX_GRADIENT_CONE_FROM_L | Cone from left |
| EFX_GRADIENT_CONE_FROM_R | Cone from right |
| EFX_GRADIENT_CONE_FROM_T | Cone from top |
| EFX_GRADIENT_CONE_FROM_B | Cone from bottom |
| EFX_GRADIENT_CONE_FROM_LT | Cone from left-top |
| EFX_GRADIENT_CONE_FROM_LB | Cone from left-bottom |
| EFX_GRADIENT_CONE_FROM_RT | Cone from right-top |
| EFX_GRADIENT_CONE_FROM_RB | Cone from right-bottom |
| EFX_GRADIENT_CONE_MAX | Number of gradients in this class. |
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