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GdipResetImageAttributesfunction

Adjusts the colors in a palette according to the adjustment settings of a specified category.

Graphicsfunctiondocumented

Syntax

FUNCTION GdipResetImageAttributes (BYVAL imageattr AS GpImageAttributes PTR, BYVAL type AS ColorAdjustType) AS GpStatus

Parameters

Name		Description
`imageattr`		[in] Pointer to the ImageAttributes object.
`type`		[in] Element of the ColorAdjustType enumeration that specifies the category for which color adjustment is reset. The default value is ColorAdjustTypeDefault.

Description

Adjusts the colors in a palette according to the adjustment settings of a specified category.

Example

' ======================================================================================== ' This example sets a color remap table, draws an adjusted image, resets the attributes, ' and then draws the original image again to show the effect of GdipResetImageAttributes. ' ======================================================================================== SUB Example_ResetImageAttributes (BYVAL hdc AS HDC)

DIM hStatus AS LONG

' // Create a graphics object from the device context DIM graphics AS GpGraphics PTR hStatus = GdipCreateFromHDC(hdc, @graphics)

' // Get the DPI scaling ratios DIM dpiX AS SINGLE hStatus = GdipGetDpiX(graphics, @dpiX) DIM rxRatio AS SINGLE = dpiX / 96 DIM dpiY AS SINGLE hStatus = GdipGetDpiY(graphics, @dpiY) Dim ryRatio AS SINGLE = dpiY / 96 ' // Set the scale transform hStatus = GdipScaleWorldTransform(graphics, rxRatio, ryRatio, MatrixOrderPrepend)

' // Load an image DIM image AS GpImage PTR hStatus = GdipLoadImageFromFile("RedGreenStripes.bmp", @image) hStatus = GdipBitmapSetResolution(image, dpiX, dpiY)

' // Get image dimensions DIM nWidth AS LONG, nHeight AS LONG hStatus = GdipGetImageWidth(image, @nWidth) hStatus = GdipGetImageHeight(image, @nHeight)

' // Create an ImageAttributes object DIM imgAttr AS GpImageAttributes PTR hStatus = GdipCreateImageAttributes(@imgAttr)

' // Set a remap table: red to blue DIM cMap AS GpColorMap cMap.oldColor = ARGB_RED cMap.newColor = ARGB_BLUE hStatus = GdipSetImageAttributesRemapTable(imgAttr, ColorAdjustTypeDefault, TRUE, 1, @cMap)

' // Draw the image with color remap applied hStatus = GdipDrawImageRectRect(graphics, image, _

10, 10, nWidth, nHeight, _
  0, 0, nWidth, nHeight, _
  UnitPixel, imgAttr, NULL, NULL)

' // Reset the ImageAttributes for the default category hStatus = GdipResetImageAttributes(imgAttr, ColorAdjustTypeDefault)

' // Draw the image again with reset attributes (should appear unaltered) hStatus = GdipDrawImageRectRect(graphics, image, _

120, 10, nWidth, nHeight, _
  0, 0, nWidth, nHeight, _
  UnitPixel, imgAttr, NULL, NULL)

' // Cleanup IF imgAttr THEN GdipDisposeImageAttributes(imgAttr) IF image THEN GdipDisposeImage(image) IF graphics THEN GdipDeleteGraphics(graphics)

END SUB ' ========================================================================================

Reference

Defined in AfxNova/AfxGdiPlus.bi:2131
Documented in Graphics/GdiPlus Flat Api/GdiPlusImageAttributes.md
Topic: ImageAttributes Functions