描述
绘制图像.
C++ Syntax
Status DrawImage( [in] Image *image, [in, ref] const RectF &rect ); |
Status DrawImage( [in] Image *image, [in, ref] const Rect &rect ); |
Status DrawImage( [in] Image *image, [in] REAL x, [in] REAL y, [in] REAL width, [in] REAL height ); |
Status DrawImage( [in] Image *image, [in] INT x, [in] INT y, [in] INT width, [in] INT height ); |
Status DrawImage( [in] Image *image, [in, ref] const PointF &point ); |
Status DrawImage( [in] Image *image, [in, ref] const Point &point ); |
Status DrawImage( [in] Image *image, [in] REAL x, [in] REAL y ); |
Status DrawImage( [in] Image *image, [in] INT x, [in] INT y ); |
Status DrawImage( [in] Image *image, [in] const PointF *destPoints, [in] INT count ); |
Status DrawImage( [in] Image *image, [in] const Point *destPoints, [in] INT count ); |
Status DrawImage( [in] Image *image, [in] REAL x, [in] REAL y, [in] REAL srcx, [in] REAL srcy, [in] REAL srcwidth, [in] REAL srcheight, [in] Unit srcUnit ); |
Status DrawImage( [in] Image *image, [in] REAL x, [in] REAL y, [in] REAL srcx, [in] REAL srcy, [in] REAL srcwidth, [in] REAL srcheight, [in] Unit srcUnit ); |
Status DrawImage( [in] Image *image, [in] REAL x, [in] REAL y, [in] REAL srcx, [in] REAL srcy, [in] REAL srcwidth, [in] REAL srcheight, [in] Unit srcUnit ); |
Status DrawImage( [in] Image *image, [in, ref] RectF &destRect, [in, ref] RectF &sourceRect, [in] Unit srcUnit, [in] ImageAttributes *imageAttributes ); |
Status DrawImage( [in] Image *image, [in, ref] Rect &destRect, [in, ref] Rect &sourceRect, [in] Unit srcUnit, [in] ImageAttributes *imageAttributes ); |
Status DrawImage( [in] Image *image, [in] const RectF &destRect [in] REAL srcx, [in] REAL srcy, [in] REAL srcwidth, [in] REAL srcheight, [in] Unit srcUnit, [in] ImageAttributes *imageAttributes, [in] DrawImageAbort callback, [in] VOID *callbackData ); |
Status DrawImage( [in] Image *image, [in] const Rect &destRect [in] REAL srcx, [in] REAL srcy, [in] REAL srcwidth, [in] REAL srcheight, [in] Unit srcUnit, [in] ImageAttributes *imageAttributes, [in] DrawImageAbort callback, [in] VOID *callbackData ); |
Status DrawImage( [in] Image *image, [in] const PointF *destPoints, [in] INT count, [in] REAL srcx, [in] REAL srcy, [in] REAL srcwidth, [in] REAL srcheight, [in] Unit srcUnit, [in] ImageAttributes *imageAttributes, [in] DrawImageAbort callback, [in] VOID *callbackData ); |
Status DrawImage( [in] Image *image, [in] const Point *destPoints, [in] INT count, [in] INT srcx, [in] INT srcy, [in] INT srcwidth, [in] INT srcheight, [in] Unit srcUnit, [in] ImageAttributes *imageAttributes, [in] DrawImageAbort callback, [in] VOID *callbackData ); |
FreeBASIC 语法
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL rc AS GpRectF PTR _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL rc AS GpRect PTR _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL x AS SINGLE, _ BYVAL y AS SINGLE, _ BYVAL nWidth AS SINGLE, _ BYVAL nHeight AS SINGLE _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL x AS INT_, _ BYVAL y AS INT_ _ BYVAL nWidth AS INT_, _ BYVAL nHeight AS INT_ _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL pt AS GpPointF PTR _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL pt AS GpPoint PTR _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL x AS SINGLE, _ BYVAL y AS SINGLE _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL x AS INT_, _ BYVAL y AS INT_ _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destPoints AS GpPointF, _ BYVAL count AS INT_ _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destPoints AS GpPoint, _ BYVAL count AS INT_ _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL x AS SINGLE, _ BYVAL y AS SINGLE, _ BYVAL srcx AS SINGLE, _ BYVAL srcy AS SINGLE, _ BYVAL nWidth AS SINGLE, _ BYVAL nHeight AS SINGLE, _ BYVAL srcUnit AS GpUnit _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL x AS INT_, _ BYVAL y AS INT_, _ BYVAL srcx AS INT_, _ BYVAL srcy AS INT_, _ BYVAL nWidth AS INT_, _ BYVAL nHeight AS INT_, _ BYVAL srcUnit AS GpUnit _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destRect AS GpRectF PTR, _ BYVAL sourceRect AS GpRectF PTR, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destRect AS GpRect PTR, _ BYVAL sourceRect AS GpRect PTR, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destx AS SINGLE, _ BYVAL desty AS SINGLE, _ BYVAL destWidth AS SINGLE, _ BYVAL destHeight AS SINGLE, _ BYVAL sourcex AS SINGLE, _ BYVAL sourcey AS SINGLE, _ BYVAL sourceWidth AS SINGLE, _ BYVAL sourceHeight AS SINGLE, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destx AS INT_, _ BYVAL desty AS INT_, _ BYVAL destWidth AS INT_, _ BYVAL destHeight AS INT_, _ BYVAL sourcex AS INT_, _ BYVAL sourcey AS INT_, _ BYVAL sourceWidth AS INT_, _ BYVAL sourceHeight AS INT_, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destRect AS GpRectF PTR, _ BYVAL srcx AS SINGLE, _ BYVAL srcy AS SINGLE, _ BYVAL srcwidth AS SINGLE, _ BYVAL srcheight AS SINGLE, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL, _ BYVAL pcallback AS DrawImageAbort = NULL, _ BYVAL pcallbackData AS ANY PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destRect AS GpRect PTR, _ BYVAL srcx AS INT_, _ BYVAL srcy AS INT_, _ BYVAL srcwidth AS INT_, _ BYVAL srcheight AS INT_, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL, _ BYVAL pcallback AS DrawImageAbort = NULL, _ BYVAL pcallbackData AS ANY PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destx AS SINGLE, _ BYVAL desty AS SINGLE, _ BYVAL destWidth AS SINGLE, _ BYVAL destHeigh AS SINGLE, _ BYVAL srcx AS SINGLE, _ BYVAL srcy AS SINGLE, _ BYVAL srcwidth AS SINGLE, _ BYVAL srcheight AS SINGLE, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL, _ BYVAL pcallback AS DrawImageAbort = NULL, _ BYVAL pcallbackData AS ANY PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destx AS INT_, _ BYVAL desty AS INT_, _ BYVAL destWidth AS INT_, _ BYVAL destHeigh AS INT_, _ BYVAL srcx AS INT_, _ BYVAL srcy AS INT_, _ BYVAL srcwidth AS INT_, _ BYVAL srcheight AS INT_, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL, _ BYVAL pcallback AS DrawImageAbort = NULL, _ BYVAL pcallbackData AS ANY PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destPoints AS GpPointF PTR, _ BYVAL nCount AS INT_, _ BYVAL srcx AS SINGLE, _ BYVAL srcy AS SINGLE, _ BYVAL srcwidth AS SINGLE, _ BYVAL srcheight AS SINGLE, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL, _ BYVAL pcallback AS DrawImageAbort = NULL, _ BYVAL pcallbackData AS ANY PTR = NULL _ ) AS GpStatus |
FUNCTION DrawImage ( _ BYVAL pImage AS CGpImage PTR, _ BYVAL destPoints AS GpPoint PTR, _ BYVAL nCount AS INT_, _ BYVAL srcx AS INT_, _ BYVAL srcy AS INT_, _ BYVAL srcwidth AS INT_, _ BYVAL srcheight AS INT_, _ BYVAL srcUnit AS GpUnit, _ BYVAL pImageAttributes AS CGpImageAttributes PTR = NULL, _ BYVAL pcallback AS DrawImageAbort = NULL, _ BYVAL pcallbackData AS ANY PTR = NULL _ ) AS GpStatus |
参数
pImage
[in]指针指向一个图像对象,指定源图像.
x
[in]简单精确指定要绘制的图像在目标矩形左上角的x坐标.
y
[in]单精度数指定要绘制的图像在目标矩形左上角的y坐标.
nWidth
[in, optional]简单精度数指定要绘制的图像,目标矩形的宽度.
nHeight
[in, optional]简单精度数指定要绘制的图像,目标矩形的高度.
pt
[in]参考一PointF对象指定的目的地的位置来绘制图像的左上角的坐标.
srcx
[in]单精度数,指定要绘制的源图像的部分左上角的x坐标.
srcy
[in]单精度数,指定要绘制的源图像的部分左上角的y坐标.
srcwidth
[in]单精度数,指定要绘制的源图像的部分的宽度.
srcheight
[in]单精度数,指定要绘制的源图像的部分的高度.
srcUnit
本单位指定的图像度量单位[in]元.默认值是unitpixel.
destPoints
[in]指向PointF对象指定地区的数组,在一个平行四边形,在绘制图像.
nCount
[in]整数,指定在destPoints数组元素个数.
pImageAttributes
[in]指针指向一个ImageAttributes对象指定要绘制的颜色与图像大小属性.默认值是NULL.
pCallback
[in]回调方法用于取消正在进行的绘画.默认值是NULL.
pCallbackData
[in]指针由pCallback参数指定的方法使用额外的数据.默认值是NULL.
返回值
如果该方法成功,则返回Ok,这是对Status枚举元素.
如果这个方法失败,它返回一个枚举的其他元素的Status.
引用文件
CGpBitmap.inc (include CGdiPlus.inc)
示例
' ========================================================================================
' The following example draws an image.
' ========================================================================================
SUB Example_DrawImage (BYVAL hdc AS HDC)
' // Create a graphics object from the window device context
DIM graphics AS CGpGraphics = hdc
' // Get the DPI scaling ratio
DIM rxRatio AS SINGLE = graphics.GetDpiX / 96
DIM ryRatio AS SINGLE = graphics.GetDpiY / 96
' // Set scaling
graphics.SetPageUnit(UnitPixel)
graphics.SetPageScale(rxRatio)
' // Create an Image object.
DIM pImage AS CGpImage = "climber.jpg"
' // Draw the original source image.
graphics.DrawImage(@pImage, 10, 10)
' // Draw the scaled image.
graphics.DrawImage(@pImage, 200, 50, 150, 75)
END SUB
' ========================================================================================
示例
' ========================================================================================
' The following example draws a portion of an image. The portion of the source image to be
' drawn is scaled to fit a specified parallelogram.
' ========================================================================================
SUB Example_DrawImage (BYVAL hdc AS HDC)
' // Create a graphics object from the window device context
DIM graphics AS CGpGraphics = hdc
' // Get the DPI scaling ratio
DIM rxRatio AS SINGLE = graphics.GetDpiX / 96
DIM ryRatio AS SINGLE = graphics.GetDpiY / 96
' // Set scaling
graphics.SetPageUnit(UnitPixel)
graphics.SetPageScale(rxRatio)
' // Create an Image object.
DIM pImage AS CGpImage = "climber.jpg"
' // Draw the original source image.
graphics.DrawImage(@pImage, 10, 10)
' // Draw the scaled image.
graphics.DrawImage(@pImage, 200.0, 30.0, 70.0, 20.0, 100.0, 200.0, UnitPixel)
END SUB
' ========================================================================================
示例
' ========================================================================================
' The following example draws an image.
' ========================================================================================
SUB Example_DrawImage (BYVAL hdc AS HDC)
' // Create a graphics object from the window device context
DIM graphics AS CGpGraphics = hdc
' // Get the DPI scaling ratio
DIM rxRatio AS SINGLE = graphics.GetDpiX / 96
DIM ryRatio AS SINGLE = graphics.GetDpiY / 96
' // Set scaling
graphics.SetPageUnit(UnitPixel)
graphics.SetPageScale(rxRatio)
' // Create an Image object.
DIM pImage AS CGpImage = "climber.jpg"
' // Create an array of PointF objects that specify the destination of the image.
DIM destPoints(0 TO 2) AS GpPointF
destPoints(0).x = 30 : destPoints(0).y = 30
destPoints(1).x = 250 : destPoints(1).y = 50
destPoints(2).x = 175 : destPoints(2).y = 120
' // Draw the image.
graphics.DrawImage(@pImage, @destPoints(0), 3)
END SUB
' ========================================================================================
示例
' ========================================================================================
' The following example draws the original source image and then draws a portion of the
' image in a specified parallelogram.
' ========================================================================================
SUB Example_DrawImageRectRect (BYVAL hdc AS HDC)
' // Create a graphics object from the window device context
DIM graphics AS CGpGraphics = hdc
' // Get the DPI scaling ratio
DIM rxRatio AS SINGLE = graphics.GetDpiX / 96
DIM ryRatio AS SINGLE = graphics.GetDpiY / 96
' // Set scaling
graphics.SetPageUnit(UnitPixel)
graphics.SetPageScale(rxRatio)
' // Create an Image object.
DIM pImage AS CGpImage = "pattern.png"
' // Draw the original source image.
graphics.DrawImage(@pImage, 10, 10)
' // Define the portion of the image to draw.
DIM srcX AS SINGLE = 70.0
DIM srcY AS SINGLE = 20.0
DIM srcWidth AS SINGLE = 100.0
DIM srcHeight AS SINGLE = 100.0
' // Create an array of Point objects that specify the destination of the cropped image.
DIM destPoints(0 TO 2) AS GpPointF
destPoints(0).x = 230 : destPoints(0).y = 30
destPoints(1).x = 350 : destPoints(1).y = 50
destPoints(2).x = 275 : destPoints(2).y = 120
' Yet another mess of the FB GdiPlus declares.
'#ifdef __FB_64BIT__
' DIM redToBlue AS ColorMap_
' redToBlue.oldColor.value = GDIP_ARGB(255, 255, 0, 0)
' redToBlue.newColor.value = GDIP_ARGB(255, 0, 0, 255)
'#else
' DIM redToBlue AS ColorMap
' redToBlue.from = GDIP_ARGB(255, 255, 0, 0)
' redToBlue.to = GDIP_ARGB(255, 0, 0, 255)
'#endif
' // GDIP_COLORMAP is an union that solves the 32/64-bit incompatibility
DIM redToBlue AS GDIP_COLORMAP = (GDIP_ARGB(255, 255, 0, 0), GDIP_ARGB(255, 0, 0, 255))
' // Create an ImageAttributes object that specifies a recoloring from red to blue.
DIM remapAttributes AS CGpImageAttributes
RemapAttributes.SetRemapTable(1, @redToBlue)
' // Draw the cropped image
graphics.DrawImage(@pImage, @destPoints(0), 3, srcX, srcY, srcWidth, srcHeight, _
UnitPixel, @remapAttributes, NULL, NULL)
END SUB
' ========================================================================================