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Java Native Access Platform
/* Copyright (c) 2007 Timothy Wall, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna.platform.win32;
import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.WinDef.HBITMAP;
import com.sun.jna.platform.win32.WinDef.HBRUSH;
import com.sun.jna.platform.win32.WinDef.HDC;
import com.sun.jna.platform.win32.WinDef.HFONT;
import com.sun.jna.platform.win32.WinDef.HPALETTE;
import com.sun.jna.platform.win32.WinDef.HPEN;
import com.sun.jna.platform.win32.WinDef.HRGN;
import com.sun.jna.platform.win32.WinDef.WORD;
import com.sun.jna.platform.win32.WinGDI.BITMAP;
import com.sun.jna.platform.win32.WinGDI.BITMAPINFO;
import com.sun.jna.platform.win32.WinGDI.BITMAPINFOHEADER;
import com.sun.jna.platform.win32.WinGDI.PIXELFORMATDESCRIPTOR;
import com.sun.jna.platform.win32.WinGDI.RGNDATA;
import com.sun.jna.platform.win32.WinNT.HANDLE;
import com.sun.jna.ptr.PointerByReference;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
/**
* Definition (incomplete) of gdi32.dll.
*
* @author Andreas "PAX" Lück, onkelpax-git[at]yahoo.de
*/
public interface GDI32 extends StdCallLibrary {
GDI32 INSTANCE = Native.load("gdi32", GDI32.class, W32APIOptions.DEFAULT_OPTIONS);
/**
* Used with BitBlt. Copies the source rectangle directly to the destination
* rectangle.
*/
int SRCCOPY = 0xCC0020;
/**
* The ExtCreateRegion function creates a region from the specified region and transformation data.
* @param lpXform
* Pointer to an XFORM structure that defines the transformation to be performed on the region. If this pointer is NULL,
* the identity transformation is used.
* @param nCount
* Specifies the number of bytes pointed to by lpRgnData.
* @param lpRgnData
* Pointer to a RGNDATA structure that contains the region data in logical units.
* @return
* If the function succeeds, the return value is the value of the region.
* If the function fails, the return value is NULL.
* To get extended error information, call GetLastError.
*/
public HRGN ExtCreateRegion(Pointer lpXform, int nCount, RGNDATA lpRgnData);
/**
* The CombineRgn function combines two regions and stores the result in a third region.
* The two regions are combined according to the specified mode.
* @param hrgnDest
* Handle to a new region with dimensions defined by combining two other regions.
* @param hrgnSrc1
* Handle to the first of two regions to be combined.
* @param hrgnSrc2
* Handle to the second of two regions to be combined.
* @param fnCombineMode
* Specifies a mode indicating how the two regions will be combined.
* @return
* The return value specifies the type of the resulting region.
*/
int CombineRgn(HRGN hrgnDest, HRGN hrgnSrc1, HRGN hrgnSrc2,
int fnCombineMode);
/**
* The CreateRectRgn function creates a rectangular region.
* @param nLeftRect
* Specifies the x-coordinate of the upper-left corner of the region in logical units.
* @param nTopRect
* Specifies the y-coordinate of the upper-left corner of the region in logical units.
* @param nRightRect
* Specifies the x-coordinate of the lower-right corner of the region in logical units.
* @param nBottomRect
* Specifies the y-coordinate of the lower-right corner of the region in logical units.
* @return
* If the function succeeds, the return value is the handle to the region.
* If the function fails, the return value is NULL.
* To get extended error information, call GetLastError.
*/
HRGN CreateRectRgn(int nLeftRect, int nTopRect, int nRightRect,
int nBottomRect);
/**
* The CreateRoundRectRgn function creates a rectangular region with rounded corners.
* @param nLeftRect
* Specifies the x-coordinate of the upper-left corner of the region in logical units.
* @param nTopRect
* Specifies the y-coordinate of the upper-left corner of the region in logical units.
* @param nRightRect
* Specifies the x-coordinate of the lower-right corner of the region in logical units.
* @param nBottomRect
* Specifies the y-coordinate of the lower-right corner of the region in logical units.
* @param nWidthEllipse
* Specifies the width of the ellipse used to create the rounded corners in logical units.
* @param nHeightEllipse
* Specifies the height of the ellipse used to create the rounded corners in logical units.
* @return
* If the function succeeds, the return value is the handle to the region.
* If the function fails, the return value is NULL.
* To get extended error information, call GetLastError.
*/
HRGN CreateRoundRectRgn(int nLeftRect, int nTopRect, int nRightRect,
int nBottomRect, int nWidthEllipse, int nHeightEllipse);
/**
* The CreatePolyPolygonRgn function creates a region consisting of a series
* of polygons. The polygons can overlap.
* @param lppt
* Pointer to an array of POINT structures that define the vertices of the polygons in logical units.
* The polygons are specified consecutively. Each polygon is presumed closed and each vertex is
* specified only once.
* @param lpPolyCounts
* Pointer to an array of integers, each of which specifies the number of points in one of the polygons
* in the array pointed to by lppt.
* @param nCount
* Specifies the total number of integers in the array pointed to by lpPolyCounts.
* @param fnPolyFillMode
* Specifies the fill mode used to determine which pixels are in the region.
* @return
* If the function succeeds, the return value is the handle to the region.
* If the function fails, the return value is zero.
* To get extended error information, call GetLastError.
*/
HRGN CreatePolyPolygonRgn(WinDef.POINT[] lppt, int[] lpPolyCounts,
int nCount, int fnPolyFillMode);
/**
* The SetRectRgn function converts a region into a rectangular region with the specified coordinates.
* @param hrgn
* Handle to the region.
* @param nLeftRect
* Specifies the x-coordinate of the upper-left corner of the rectangular region in logical units.
* @param nTopRect
* Specifies the y-coordinate of the upper-left corner of the rectangular region in logical units.
* @param nRightRect
* Specifies the x-coordinate of the lower-right corner of the rectangular region in logical units.
* @param nBottomRect
* Specifies the y-coordinate of the lower-right corner of the rectangular region in logical units.
* @return
* If the function succeeds, the return value is nonzero.
* If the function fails, the return value is zero.
* To get extended error information, call GetLastError.
*/
boolean SetRectRgn(HRGN hrgn, int nLeftRect, int nTopRect, int nRightRect,
int nBottomRect);
/**
* The SetPixel function sets the pixel at the specified coordinates to the specified color.
* @param hDC
* Handle to the device context.
* @param x
* Specifies the x-coordinate, in logical units, of the point to be set.
* @param y
* Specifies the y-coordinate, in logical units, of the point to be set.
* @param crColor
* Specifies the color to be used to paint the point. To create a COLORREF color value, use the RGB macro.
* @return
* If the function succeeds, the return value is the RGB value that the function sets the pixel to.
* This value may differ from the color specified by crColor; that occurs when an exact match for the
* specified color cannot be found. If the function fails, the return value is 1. To get extended error
* information, call GetLastError. This can be the following value.
*/
int SetPixel(HDC hDC, int x, int y, int crColor);
/**
* The CreateCompatibleDC function creates a memory device context (DC) compatible with the specified device.
* @param hDC
* Handle to an existing DC. If this handle is NULL, the function creates a memory DC compatible with the
* application's current screen.
* @return
* If the function succeeds, the return value is the handle to a memory DC.
* If the function fails, the return value is NULL.
* To get extended error information, call GetLastError.
*/
HDC CreateCompatibleDC(HDC hDC);
/**
* The DeleteDC function deletes the specified device context (DC).
* @param hDC
* Handle to the device context.
* @return
* If the function succeeds, the return value is nonzero.
* If the function fails, the return value is zero.
* To get extended error information, call GetLastError.
*/
boolean DeleteDC(HDC hDC);
/**
* The CreateDIBitmap function creates a compatible bitmap (DDB) from a DIB and, optionally,
* sets the bitmap bits.
* @param hDC
* Handle to a device context.
* @param lpbmih
* Pointer to a bitmap information header structure, which may be one of those shown in the following table.
* @param fdwInit
* Specifies how the system initializes the bitmap bits.
* @param lpbInit
* Pointer to an array of bytes containing the initial bitmap data.
* @param lpbmi
* Pointer to a BITMAPINFO structure that describes the dimensions and color format of
* the array pointed to by the lpbInit parameter.
* @param fuUsage
* Specifies whether the bmiColors member of the BITMAPINFO structure was initialized and, if so,
* whether bmiColors contains explicit red, green, blue (RGB) values or palette indexes. The
* fuUsage parameter must be one of the following values.
* @return
* If the function succeeds, the return value is a handle to the compatible bitmap.
* If the function fails, the return value is NULL.
* To get extended error information, call GetLastError.
*/
HBITMAP CreateDIBitmap(HDC hDC, BITMAPINFOHEADER lpbmih, int fdwInit,
Pointer lpbInit, BITMAPINFO lpbmi, int fuUsage);
/**
* The CreateDIBSection function creates a DIB that applications can write to directly.
* The function gives you a pointer to the location of the bitmap bit values. You can supply
* a handle to a file-mapping object that the function will use to create the bitmap, or you
* can let the system allocate the memory for the bitmap.
* @param hDC
* Handle to a device context. If the value of iUsage is DIB_PAL_COLORS, the function uses this
* device context's logical palette to initialize the DIB colors.
* @param pbmi
* Pointer to a BITMAPINFO structure that specifies various attributes of the DIB, including
* the bitmap dimensions and colors.
* @param iUsage
* Specifies the type of data contained in the bmiColors array member of the BITMAPINFO structure
* pointed to by pbmi (either logical palette indexes or literal RGB values).
* @param ppvBits
* Pointer to a variable that receives a pointer to the location of the DIB bit values.
* @param hSection
* Handle to a file-mapping object that the function will use to create the DIB. This parameter can be NULL.
* @param dwOffset
* Specifies the offset from the beginning of the file-mapping object referenced by hSection where storage
* for the bitmap bit values is to begin.
* @return
* Specifies the offset from the beginning of the file-mapping object referenced by hSection where storage
* for the bitmap bit values is to begin.
*/
HBITMAP CreateDIBSection(HDC hDC, BITMAPINFO pbmi, int iUsage,
PointerByReference ppvBits, Pointer hSection, int dwOffset);
/**
* The CreateCompatibleBitmap function creates a bitmap compatible with the device that is
* associated with the specified device context.
* @param hDC
* Handle to a device context.
* @param width
* Specifies the bitmap width, in pixels.
* @param height
* Specifies the bitmap height, in pixels.
* @return
* If the function succeeds, the return value is a handle to the compatible bitmap (DDB).
* If the function fails, the return value is NULL.
* To get extended error information, call GetLastError.
*/
HBITMAP CreateCompatibleBitmap(HDC hDC, int width, int height);
/**
* The SelectObject function selects an object into the specified device context (DC).
* The new object replaces the previous object of the same type.
* @param hDC
* Handle to the DC.
* @param hGDIObj
* Handle to the object to be selected.
* @return
* If the selected object is not a region and the function succeeds, the return value
* is a handle to the object being replaced. If the selected object is a region and the
* function succeeds, the return value is one of the REGION values.
*/
HANDLE SelectObject(HDC hDC, HANDLE hGDIObj);
/**
* The DeleteObject function deletes a logical pen, brush, font, bitmap, region, or palette,
* freeing all system resources associated with the object. After the object is deleted, the
* specified handle is no longer valid.
* @param hObject
* Handle to a logical pen, brush, font, bitmap, region, or palette.
* @return
* If the function succeeds, the return value is nonzero.
* If the specified handle is not valid or is currently selected into a DC, the return value is zero.
* To get extended error information, call GetLastError.
*/
boolean DeleteObject(HANDLE hObject);
/** The GetDeviceCaps function retrieves device-specific information for
* the specified device.
* @param hdc A handle to the DC.
* @param nIndex The item to be returned.
* @return
* The return value specifies the value of the desired item. When
* nIndex is BITSPIXEL and the device has 15bpp or
* 16bpp, the return value is 16.
*/
int GetDeviceCaps(HDC hdc, int nIndex);
/** The GetDIBits function retrieves the bits fo the specified compatible
* bitmap and copies them into a buffer as a DIB using the specified
* format.
* @param hdc A handle to the device context.
* @param hbmp A handle to the bitmap. This must be a compatible bitmap
* (DDB).
* @param uStartScan The first scan line to retrieve
* @param cScanLines The number of scan lines to retrieve.
* @param lpvBits A pointer to a buffer to receive the bitmap data. If
* this parameter is null, the function passes the dimensions
* and format of the bitmap to the {@link BITMAPINFO} structure pointed to
* by the lpbi parameter.
* @param lpbi A pointer to a {@link BITMAPINFO} structure that specifies
* the desired format for the DIB data.
* @param uUsage The format of the bmiColors member of the {@link
* BITMAPINFO} structure.
* @return status
*/
int GetDIBits(HDC hdc, HBITMAP hbmp, int uStartScan, int cScanLines, Pointer lpvBits, BITMAPINFO lpbi, int uUsage);
/**
* The ChoosePixelFormat function attempts to match an appropriate pixel format supported
* by a device context to a given pixel format specification.
*
* @param hdc
* Specifies the device context that the function examines to determine the best
* match for the pixel format descriptor pointed to by ppfd.
* @param ppfd
* Pointer to a PIXELFORMATDESCRIPTOR structure that specifies the requested pixel format.
* @return If the function succeeds, the return value is a pixel format index (one-based) that
* is the closest match to the given pixel format descriptor.
*/
public int ChoosePixelFormat(HDC hdc, PIXELFORMATDESCRIPTOR.ByReference ppfd);
/**
* The SetPixelFormat function sets the pixel format of the specified device context to the
* format specified by the iPixelFormat index.
*
* @param hdc
* Specifies the device context whose pixel format the function attempts to set.
* @param iPixelFormat
* Index that identifies the pixel format to set. The various pixel formats supported
* by a device context are identified by one-based indexes.
* @param ppfd
* Pointer to a PIXELFORMATDESCRIPTOR structure that contains the logical pixel format specification.
* @return true if successful
*/
public boolean SetPixelFormat(HDC hdc, int iPixelFormat, PIXELFORMATDESCRIPTOR.ByReference ppfd);
/**
* Retrieves information for the specified graphics object.
*
* @param hgdiobj A handle to the graphics object of interest. This can be
* a handle to one of the following: a logical bitmap, a
* brush, a font, a palette, a pen, or a device independent
* bitmap created by calling the {@link #CreateDIBSection}
* function.
* @param cbBuffer The number of bytes of information to be written to the
* buffer.
* @param lpvObject
*
* A pointer to a buffer that receives the information about the specified
* graphics object.
*
* The following table shows the type of information the buffer receives for
* each type of graphics object you can specify with hgdiobj.
*
*
* Information Received
*
*
* Object type
* Data written to buffer
*
*
*
* {@link HBITMAP}
* {@link BITMAP}
*
*
* {@link HBITMAP} returned from a call to {@link #CreateDIBSection}
*
* DIBSECTION, if cbBuffer is set to sizeof(DIBSECTION), or BITMAP, if
* cbBuffer is set to sizeof (BITMAP).
*
*
* {@link HPALETTE}
* A {@link WORD} count of the number of entries in the logical
* palette
*
*
* {@link HPEN} returned from a call to ExtCreatePen
* EXTLOGPEN
*
* {@link HPEN}
* LOGPEN
*
* {@link HBRUSH}
* LOGBRUSH
*
* {@link HFONT}
* LOGFONT
*
*
*
* @return If the function succeeds, and lpvObject is a valid pointer, the
* return value is the number of bytes stored into the buffer.
*
* If the function succeeds, and lpvObject is NULL, the return value is the
* number of bytes required to hold the information the function would store
* into the buffer.
*
* If the function fails, the return value is zero.
*/
public int GetObject(final HANDLE hgdiobj, final int cbBuffer,
final Pointer lpvObject);
/**
* The BitBlt function performs a bit-block transfer of the color data
* corresponding to a rectangle of pixels from the specified source device
* context into a destination device context.
*
* @param hdcDest A handle to the destination device context.
* @param nXDest The x-coordinate, in logical units, of the upper-left
* corner of the destination rectangle.
* @param nYDest The y-coordinate, in logical units, of the upper-left
* corner of the destination rectangle.
* @param nWidth The width, in logical units, of the source and destination
* rectangles.
* @param nHeight The height, in logical units, of the source and the
* destination rectangles.
* @param hdcSrc A handle to the source device context.
* @param nXSrc The x-coordinate, in logical units, of the upper-left
* corner of the source rectangle.
* @param nYSrc The y-coordinate, in logical units, of the upper-left
* corner of the source rectangle.
* @param dwRop A raster-operation code.
* These codes define how the color data for the source rectangle is to be
* combined with the color data for the destination rectangle to achieve the
* final color.
* The following list shows some common raster operation codes.
*
*
*
*
* Value
* Meaning
*
*
* BLACKNESS
* Fills the destination rectangle using the color associated with index
* 0 in the physical palette. (This color is black for the default physical
* palette.)
*
*
* CAPTUREBLT
* Includes any windows that are layered on top of your window in the
* resulting image. By default, the image only contains your window. Note
* that this generally cannot be used for printing device contexts.
*
*
* DSTINVERT
* Inverts the destination rectangle.
*
*
* MERGECOPY
* Merges the colors of the source rectangle with the brush currently
* selected in hdcDest, by using the Boolean AND operator.
*
*
* MERGEPAINT
* Merges the colors of the inverted source rectangle with the colors of
* the destination rectangle by using the Boolean OR operator.
*
*
* NOMIRRORBITMAP
* Prevents the bitmap from being mirrored.
*
*
* NOTSRCCOPY
* Copies the inverted source rectangle to the destination.
*
*
*
* NOTSRCERASE
* Combines the colors of the source and destination rectangles by using
* the Boolean OR operator and then inverts the resultant color.
*
*
* PATCOPY
* Copies the brush currently selected in hdcDest, into the
* destination bitmap.
*
*
* PATINVERT
* Combines the colors of the brush currently selected in
* hdcDest, with the colors of the destination rectangle by using
* the Boolean XOR operator.
*
*
* PATPAINT
* Combines the colors of the brush currently selected in
* hdcDest, with the colors of the inverted source rectangle by
* using the Boolean OR operator. The result of this operation is combined
* with the colors of the destination rectangle by using the Boolean OR
* operator.
*
*
* SRCAND
* Combines the colors of the source and destination rectangles by using
* the Boolean AND operator.
*
*
* SRCCOPY
* Copies the source rectangle directly to the destination
* rectangle.
*
*
* SRCERASE
* Combines the inverted colors of the destination rectangle with the
* colors of the source rectangle by using the Boolean AND operator.
*
*
* SRCINVERT
* Combines the colors of the source and destination rectangles by using
* the Boolean XOR operator.
*
*
* SRCPAINT
* Combines the colors of the source and destination rectangles by using
* the Boolean OR operator.
*
*
* WHITENESS
* Fills the destination rectangle using the color associated with index
* 1 in the physical palette. (This color is white for the default physical
* palette.)
*
*
*
*
* @return True if the function succeeded, False if not. To get extended
* error information, call GetLastError.
*/
boolean BitBlt(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HDC hdcSrc, int nXSrc, int nYSrc,
int dwRop);
}
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