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ImageList_DrawEx function (commctrl.h)

  • Článek

Draws an image list item in the specified device context. The function uses the specified drawing style and blends the image with the specified color.

Syntax

BOOL ImageList_DrawEx(
  HIMAGELIST himl,
  int        i,
  HDC        hdcDst,
  int        x,
  int        y,
  int        dx,
  int        dy,
  COLORREF   rgbBk,
  COLORREF   rgbFg,
  UINT       fStyle
);

Parameters

himl

Type: HIMAGELIST

A handle to the image list

i

Type: int

The index of the image to draw.

hdcDst

Type: HDC

A handle to the destination device context.

x

Type: int

The x-coordinate at which to draw within the specified device context.

y

Type: int

The y-coordinate at which to draw within the specified device context.

dx

Type: int

The width of the portion of the image to draw relative to the upper-left corner of the image. If dx and dy are zero, the function draws the entire image. The function does not ensure that the parameters are valid.

dy

Type: int

The height of the portion of the image to draw, relative to the upper-left corner of the image. If dx and dy are zero, the function draws the entire image. The function does not ensure that the parameters are valid.

rgbBk

Type: COLORREF

The background color of the image. This parameter can be an application-defined RGB value or one of the following values:

Value Meaning
CLR_NONE
 No background color. The image is drawn transparently.
CLR_DEFAULT
 The default background color. The image is drawn using the background color of the image list.

rgbFg

Type: COLORREF

The foreground color of the image. This parameter can be an application-defined RGB value or one of the following values:

Value Meaning
CLR_NONE
 No blend color. The image is blended with the color of the destination device context.
CLR_DEFAULT
 The default foreground color. The image is drawn using the system highlight color as the foreground color.

fStyle

Type: UINT

The drawing style and, optionally, the overlay image. For information about specifying an overlay image index, see the comments section at the end of this topic. This parameter can be a combination of an overlay image index and one or more of the following values:

Value Meaning
ILD_BLEND
ILD_BLEND25
 Draws the image, blending 25 percent with the blend color specified by rgbFg. This value has no effect if the image list does not contain a mask.
ILD_BLEND50
 Draws the image, blending 50 percent with the blend color specified by rgbFg. This value has no effect if the image list does not contain a mask.
ILD_FOCUS
ILD_IMAGE
 Set this flag if the overlay does not require a mask to be drawn. This flag causes ImageList_DrawEx to draw just the image, ignoring the mask.
ILD_MASK
 Draws the mask.
ILD_NORMAL
 Draws the image using the background color for the image list. If the background color is the CLR_NONE value, the image is drawn transparently using the mask.
ILD_SELECTED
ILD_TRANSPARENT
 Draws the image transparently using the mask, regardless of the background color. This value has no effect if the image list does not contain a mask.

Return value

Type: BOOL

Returns nonzero if successful, or zero otherwise.

Remarks

An overlay image is drawn transparently over the primary image specified in the i parameter. To specify an overlay image in the fStyle parameter, use the INDEXTOOVERLAYMASK macro to shift the one-based index of the overlay image. Use the OR operator to logically combine the return value of the macro with the drawing style flags specified in the fStyle parameter. You must first specify this image as an overlay image by using the ImageList_SetOverlayImage function.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header commctrl.h
Library Comctl32.lib
DLL Comctl32.dll