如何使用 C# 列出可用的视频模式？
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How to list available video modes using C#?
提问by Click Ok
I've found nice examples using C++ (http://www.codeproject.com/KB/tips/resswitch.aspx), but not in C#.
我找到了使用 C++ ( http://www.codeproject.com/KB/tips/resswitch.aspx) 的好例子，但不是在 C# 中。
Can someone help, please?
有人可以帮忙吗？
Edit: The exact function that list the video modes is:
编辑：列出视频模式的确切功能是：
BOOL CVideoModes::GetAvailableVideoModes(CAvailableVideoModes& modes)
{
modes.SetSize(0, 5);
int i=0;
DEVMODE dm;
while (EnumDisplaySettings(NULL, i, &dm))
{
CVideoMode thismode(dm.dmBitsPerPel, dm.dmPelsWidth,
dm.dmPelsHeight, dm.dmDisplayFrequency);
modes.SetAtGrow(i, thismode);
++i;
}
modes.FreeExtra();
return (i>0);
}
But sincerelly I cannot understand that C++ code. Where I can find that "thismode" function?
但老实说，我无法理解那个 C++ 代码。我在哪里可以找到“thismode”功能？
采纳答案by Quan Mai
If you mean video modes are available resolutions, try to invoke EnumDisplaySettingsEx
如果您的意思是视频模式是可用的分辨率，请尝试调用 EnumDisplaySettingsEx
details can be found here:
详细信息可以在这里找到：
http://msdn.microsoft.com/en-us/library/dd162612(VS.85).aspx
http://msdn.microsoft.com/en-us/library/dd162612(VS.85).aspx
small program that lists available resolutions:
列出可用分辨率的小程序：
using System;
using System.Linq;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace ListResolutions
{
class Program
{
[DllImport("user32.dll")]
public static extern bool EnumDisplaySettings(
string deviceName, int modeNum, ref DEVMODE devMode);
const int ENUM_CURRENT_SETTINGS = -1;
const int ENUM_REGISTRY_SETTINGS = -2;
[StructLayout(LayoutKind.Sequential)]
public struct DEVMODE
{
private const int CCHDEVICENAME = 0x20;
private const int CCHFORMNAME = 0x20;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)]
public string dmDeviceName;
public short dmSpecVersion;
public short dmDriverVersion;
public short dmSize;
public short dmDriverExtra;
public int dmFields;
public int dmPositionX;
public int dmPositionY;
public ScreenOrientation dmDisplayOrientation;
public int dmDisplayFixedOutput;
public short dmColor;
public short dmDuplex;
public short dmYResolution;
public short dmTTOption;
public short dmCollate;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)]
public string dmFormName;
public short dmLogPixels;
public int dmBitsPerPel;
public int dmPelsWidth;
public int dmPelsHeight;
public int dmDisplayFlags;
public int dmDisplayFrequency;
public int dmICMMethod;
public int dmICMIntent;
public int dmMediaType;
public int dmDitherType;
public int dmReserved1;
public int dmReserved2;
public int dmPanningWidth;
public int dmPanningHeight;
}
static void Main(string[] args)
{
DEVMODE vDevMode = new DEVMODE();
int i = 0;
while (EnumDisplaySettings(null, i, ref vDevMode))
{
Console.WriteLine("Width:{0} Height:{1} Color:{2} Frequency:{3}",
vDevMode.dmPelsWidth,
vDevMode.dmPelsHeight,
1 << vDevMode.dmBitsPerPel, vDevMode.dmDisplayFrequency
);
i++;
}
}
}
}
