122 lines
4.1 KiB
C#
122 lines
4.1 KiB
C#
using System.Runtime.InteropServices;
|
||
|
||
namespace AudioWallpaper {
|
||
public class GetScreenInfo {
|
||
|
||
public GetScreenInfo() {
|
||
|
||
}
|
||
|
||
public string GetScreenName(Control obj) {
|
||
string name = null;
|
||
if (obj != null) {
|
||
name = Screen.FromControl(obj).DeviceName;
|
||
}
|
||
return name;
|
||
}
|
||
public Screen GetScreen(Control obj) {
|
||
Screen screen = null;
|
||
if (obj != null) {
|
||
screen = Screen.FromControl(obj);
|
||
}
|
||
return screen;
|
||
}
|
||
public Screen? GetScreenForName(String name) {
|
||
foreach (Screen s in GetAllScreen()) {
|
||
if (s.DeviceName.Equals(name)) {
|
||
return s;
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
public int GetScreenCount() {
|
||
|
||
return Screen.AllScreens.Count();
|
||
|
||
}
|
||
public Screen[] GetAllScreen() {
|
||
return Screen.AllScreens;
|
||
}
|
||
/// <summary>
|
||
/// 获取显示器X，Y值基于窗体显示的修正值
|
||
/// </summary>
|
||
/// <param name="screen">显示器</param>
|
||
/// <returns>修正后窗体显示基准点</returns>
|
||
public Point GetOffsetCorrection(Screen screen) {
|
||
//返回的基准点
|
||
Point point = new Point();
|
||
//所有显示器对象
|
||
Screen[] screens = GetAllScreen();
|
||
//主显示器
|
||
Screen MainScreen = Screen.PrimaryScreen;
|
||
int offsetX = 0;
|
||
int offsetY = 0;
|
||
//位于主显示器左边最远的显示器距离
|
||
int minX = 0;
|
||
int minY = 0;
|
||
|
||
foreach (Screen sc in screens) {
|
||
if (sc.Bounds.Location.X < minX) {
|
||
minX = sc.Bounds.Location.X;
|
||
}
|
||
if (sc.Bounds.Location.Y < 0) {
|
||
minY = sc.Bounds.Location.Y;
|
||
}
|
||
}
|
||
//计算传入的显示器距离主显示器位置
|
||
if (screen.Bounds.Location.X < 0) {
|
||
//该显示器在主显示器的左边
|
||
offsetX = Math.Abs(screen.Bounds.Location.X);
|
||
point.X = Math.Abs(minX) - offsetX;
|
||
}
|
||
if (screen.Bounds.Location.Y < 0) {
|
||
//该显示器在主显示器的上边
|
||
offsetY = Math.Abs(screen.Bounds.Location.Y);
|
||
point.Y = Math.Abs(minY) - offsetY;
|
||
}
|
||
if (screen.Bounds.Location.X >= 0) {
|
||
//在主显示器的右边或者，它就是主显示器
|
||
//偏移主显示器缩放带来的误差
|
||
point.X = Math.Abs(minX) + screen.Bounds.Location.X;
|
||
}
|
||
if (screen.Bounds.Location.Y >= 0) {
|
||
//在主显示器的下边
|
||
point.Y = Math.Abs(minY) + screen.Bounds.Location.Y;
|
||
}
|
||
|
||
//Console.WriteLine($"屏幕的位置{screen.Bounds.Location}");
|
||
//Console.WriteLine($"Abs miX ：{Math.Abs(minX)}");
|
||
//Console.WriteLine($"offsetx {offsetX}");
|
||
//Console.WriteLine($"新算法结果：{point}");
|
||
|
||
|
||
return point;
|
||
|
||
}
|
||
[DllImport("user32.dll")]
|
||
private static extern uint GetDpiForWindow([In] IntPtr hmonitor);
|
||
|
||
#region Win32 API
|
||
|
||
[DllImport("gdi32.dll", EntryPoint = "GetDeviceCaps")]
|
||
static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
|
||
[DllImport("gdi32.dll", EntryPoint = "CreateDC")]
|
||
static extern IntPtr CreateDC(string lpszDriver, string lpszDevice, string lpszOutput, IntPtr lpInitData);
|
||
[DllImport("user32.dll", EntryPoint = "ReleaseDC")]
|
||
static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDc);
|
||
|
||
#endregion
|
||
public Size GetScreenScale(Screen screen) {
|
||
IntPtr hdc = CreateDC(screen.DeviceName, null, null, IntPtr.Zero);
|
||
float yPixel = GetDeviceCaps(hdc, 117);
|
||
float xPixel = GetDeviceCaps(hdc, 118);
|
||
ReleaseDC(IntPtr.Zero, hdc);
|
||
|
||
return new Size((int)xPixel, (int)yPixel);
|
||
}
|
||
|
||
|
||
}
|
||
|
||
}
|