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C#调用GetDeviceCaps参数nIndex是多少？

2009-06-10 09:04:26 393 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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WinForm DataGridView 多维合并表头实现方案 DataGridView 是 .NET WinForm 中最常用的表格控件，但其原生表头仅支持单层线性结构，缺乏对多级分组、跨列合并等工业报表常见需求的支持。其底层采用行主控渲染模型，表头单元格无独立坐标系与层级管理能力，导致传统修改 ColumnHeaderCell 或样式配置均无法真正实现树状表头。本方案通过重写 OnPaint 方法接管表头绘制流程，结合自定义 MergedHeaderNode 结构与动态坐标映射，构建出支持任意嵌套层级、DPI 自适应、鼠标交互精准的硬核解决方案。适用于 SCADA、阅读详情

C#调用GetDeviceCaps参数nIndex是多少？

hdc
[in] Handle to the DC.

nIndex
[in] Specifies the item to return. This parameter can be one of the following values. Index Meaning
DRIVERVERSION The device driver version.
TECHNOLOGY Device technology. It can be any one of the following values.
DT_PLOTTER Vector plotter
DT_RASDISPLAY Raster display
DT_RASPRINTER Raster printer
DT_RASCAMERA Raster camera
DT_CHARSTREAM Character stream
DT_METAFILE Metafile
DT_DISPFILE Display file
If the hdc parameter is a handle to the DC of an enhanced metafile, the device technology is that of the referenced device as specified to the CreateEnhMetaFile function. To determine whether it is an enhanced metafile DC, use the GetObjectType function.
HORZSIZE Width, in millimeters, of the physical screen.
VERTSIZE Height, in millimeters, of the physical screen.
HORZRES Width, in pixels, of the screen; or for printers, the width, in pixels, of the printable area of the page.
VERTRES Height, in raster lines, of the screen; or for printers, the height, in pixels, of the printable area of the page.
....

在使用C#调用时，应传入整型，但不知道各个值对应的整型应是多少？是按帮助中顺序来吗？

谢谢

...全文

C# 下的自由打印，不使用水晶报表，实现列表式的打印。不使用水晶报表，实现列表式的打印。刚学C# 1个月时写的，如果污染了视听，请见谅。 struct PageProperty { public int PageLeft; public int PageTop; public int PageBottom; public int PageWidth; public int PageHeight; public int RowSpace; public int ColSpace; public int AllVisibleColSpace; public int AllColWidth; public int AllVisibleColWidth; public int AllRowHeight; public int TitleH; public int SubTitleH; public int FooterH; public int[] ColWidth; public int VisibleColWidth; public int PageTextHeight; public int PageTextWidth; } struct TRect { public int Left; public int Top; public int Right; public int Bottom; } class PanelImage : Panel { protected Panel panelShadow = null; public PictureBox ImgData = null; public PanelImage() { this.BackColor = Color.Gray; this.DoubleBuffered = true; ImgData = new PictureBox(); ImgData.Parent = this; ImgData.BackColor = Color.White; panelShadow = new Panel(); panelShadow.Parent = this; panelShadow.BackColor = Color.Black; ResizeControl(); } void ResizeControl() { panelShadow.Left = 8; panelShadow.Top = 8; panelShadow.Width = this.Width - 12; panelShadow.Height = this.Height - 12; ImgData.Left = 4; ImgData.Top = 4; ImgData.Width = this.Width - 12; ImgData.Height = this.Height - 12; } protected override void OnResize(EventArgs eventargs) { ResizeControl(); base.OnResize(eventargs); } protected override void Dispose(bool disposing) { panelShadow.Dispose(); ImgData.Dispose(); base.Dispose(disposing); } } public partial class PrintGrid { [DllImport("gdi32.dll", EntryPoint = "GetDeviceCaps", CallingConvention = CallingConvention.StdCall)] public static extern int GetDeviceCaps(int Handle, int nIndex); private float _leftMargin = 0; private float _topMargin = 0; private float _rightMargin = 0; private float _bottomMargin = 0; const short HORZSIZE = 4; const short VERTSIZE = 6; const short HORZRES = 8; const short VERTRES = 10; const short PHYSICALOFFSETX = 112; const short PHYSICALOFFSETY = 113; int ixLogPixPerInch; int iyLogPixPerInch; int xLogPixPerInch; int yLogPixPerInch; int FPageIndex; int FPageCount; string FLeftPageFooter; string FRightPageFooter; string FTitle; Font FFont; Font FTitleFont; Font FTextFont; Font FFooterFont; Font FSubTitleFont; int FSubTitleOff; int FLeftPageFooterOff; int FPrintCount; string FSubTitle; bool FHLine; bool FVLine; int FPageTop; int FPageLeft; int FPageRight; int FPageBottom; int FToPage; int FFromPage; bool FPrintPageCount; string FRightSubTitle; bool FExistPrinter; bool FCenterShow; Color FHeaderColor; bool FUseHeaderColor; private int iDX; //水平缩放比例 private int iDY; //垂直缩放比例 private int ColCount; //总列数 private int RowCount; //总行数 private int[] ColWidth; //记录每一列的宽度 private int AllColWidth; //所有列的宽度 private int AllVisibleColWidth; //所有可视列的宽度 private int RowSpace; //行间距 private int ColSpace; //所有可视列间距 private int AllVisibleColSpace; //所有行的间距 private int AllColSpace; //所有列的间距 private int AllRowSpace; //所有行的间距 private int RowsOfPage; //每页打的行数 private int PageWidth; //页的宽度 private int PageHeight; //页的高度 private int PageTextHeight; //页正文高度 private int PageTextWidth; //页正文宽度 private int TextTop; //正文上边距 private int TextLeft; //正文左边距 private int TitleH; //标题高度 private int SubTitleH; //子标题高度 private int FooterH; //页脚高度 private int FooterTop; //页脚顶部 private int TextH; //正文高度 private int VisibleColWidth; private int DX; private int DY; private string StrTest; private ListView ListViewData = null; //数据 private PrintDocument PD = null; 立即下载

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You can use the following enumeration for passing in as nIndex:

public enum DeviceCap

{
/// <summary>
/// Device driver version
/// </summary>
DRIVERVERSION = 0,
/// <summary>
/// Device classification
/// </summary>
TECHNOLOGY = 2,
/// <summary>
/// Horizontal size in millimeters
/// </summary>
HORZSIZE = 4,
/// <summary>
/// Vertical size in millimeters
/// </summary>
VERTSIZE = 6,
/// <summary>
/// Horizontal width in pixels
/// </summary>
HORZRES = 8,
/// <summary>
/// Vertical height in pixels
/// </summary>
VERTRES = 10,
/// <summary>
/// Number of bits per pixel
/// </summary>
BITSPIXEL = 12,
/// <summary>
/// Number of planes
/// </summary>
PLANES = 14,
/// <summary>
/// Number of brushes the device has
/// </summary>
NUMBRUSHES = 16,
/// <summary>
/// Number of pens the device has
/// </summary>
NUMPENS = 18,
/// <summary>
/// Number of markers the device has
/// </summary>
NUMMARKERS = 20,
/// <summary>
/// Number of fonts the device has
/// </summary>
NUMFONTS = 22,
/// <summary>
/// Number of colors the device supports
/// </summary>
NUMCOLORS = 24,
/// <summary>
/// Size required for device descriptor
/// </summary>
PDEVICESIZE = 26,
/// <summary>
/// Curve capabilities
/// </summary>
CURVECAPS = 28,
/// <summary>
/// Line capabilities
/// </summary>
LINECAPS = 30,
/// <summary>
/// Polygonal capabilities
/// </summary>
POLYGONALCAPS = 32,
/// <summary>
/// Text capabilities
/// </summary>
TEXTCAPS = 34,
/// <summary>
/// Clipping capabilities
/// </summary>
CLIPCAPS = 36,
/// <summary>
/// Bitblt capabilities
/// </summary>
RASTERCAPS = 38,
/// <summary>
/// Length of the X leg
/// </summary>
ASPECTX = 40,
/// <summary>
/// Length of the Y leg
/// </summary>
ASPECTY = 42,
/// <summary>
/// Length of the hypotenuse
/// </summary>
ASPECTXY = 44,
/// <summary>
/// Shading and Blending caps
/// </summary>
SHADEBLENDCAPS = 45,

/// <summary>
/// Logical pixels inch in X
/// </summary>
LOGPIXELSX = 88,
/// <summary>
/// Logical pixels inch in Y
/// </summary>
LOGPIXELSY = 90,

/// <summary>
/// Number of entries in physical palette
/// </summary>
SIZEPALETTE = 104,
/// <summary>
/// Number of reserved entries in palette
/// </summary>
NUMRESERVED = 106,
/// <summary>
/// Actual color resolution
/// </summary>
COLORRES = 108,

// Printing related DeviceCaps. These replace the appropriate Escapes
/// <summary>
/// Physical Width in device units
/// </summary>
PHYSICALWIDTH = 110,
/// <summary>
/// Physical Height in device units
/// </summary>
PHYSICALHEIGHT = 111,
/// <summary>
/// Physical Printable Area x margin
/// </summary>
PHYSICALOFFSETX = 112,
/// <summary>
/// Physical Printable Area y margin
/// </summary>
PHYSICALOFFSETY = 113,
/// <summary>
/// Scaling factor x
/// </summary>
SCALINGFACTORX = 114,
/// <summary>
/// Scaling factor y
/// </summary>
SCALINGFACTORY = 115,

/// <summary>
/// Current vertical refresh rate of the display device (for displays only) in Hz
/// </summary>
VREFRESH = 116,
/// <summary>
/// Horizontal width of entire desktop in pixels
/// </summary>
DESKTOPVERTRES = 117,
/// <summary>
/// Vertical height of entire desktop in pixels
/// </summary>
DESKTOPHORZRES = 118,
/// <summary>
/// Preferred blt alignment
/// </summary>
BLTALIGNMENT = 119
}

*****************************************************************************
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C#调用GetDeviceCaps参数nIndex是多少？

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