TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

How to use DeleteDC method of FlaUI.Core.WindowsAPI.Gdi32 class

Best FlaUI code snippet using FlaUI.Core.WindowsAPI.Gdi32.DeleteDC

Capture.cs

Source:Capture.cs

...100            action(hDest, hSrc);101            var bmp = Image.FromHbitmap(hBmp);102            Gdi32.SelectObject(hDest, hPrevBmp);103            Gdi32.DeleteObject(hBmp);104            Gdi32.DeleteDC(hDest);105            User32.ReleaseDC(hDesk, hSrc);106            return bmp;107        }108    }109}...

Gdi32.cs

Source:Gdi32.cs

...21            IntPtr hdcDest, int nXOriginDest, int nYOriginDest, int nWidthDest, int nHeightDest,22            IntPtr hdcSrc, int nXOriginSrc, int nYOriginSrc, int nWidthSrc, int nHeightSrc,23            TernaryRasterOperations dwRop);24        [DllImport("gdi32.dll")]25        public static extern IntPtr DeleteDC(IntPtr hDc);26        [DllImport("gdi32.dll")]27        public static extern IntPtr DeleteObject(IntPtr hDc);28    }29#pragma warning restore CS1591 // Missing XML comment for publicly visible type or member30}

DeleteDC

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using FlaUI.Core.WindowsAPI;7{8    {9        static void Main(string[] args)10        {11            IntPtr dc1 = Gdi32.CreateDC("DISPLAY", null, null, IntPtr.Zero);12            IntPtr dc2 = Gdi32.CreateDC("DISPLAY", null, null, IntPtr.Zero);13            IntPtr dc3 = Gdi32.CreateDC("DISPLAY", null, null, IntPtr.Zero);14            Console.WriteLine("Press any key to delete DCs");15            Console.ReadKey();16            Gdi32.DeleteDC(dc1);17            Gdi32.DeleteDC(dc2);18            Gdi32.DeleteDC(dc3);19            Console.WriteLine("Press any key to exit");20            Console.ReadKey();21        }22    }23}24using System;25using System.Collections.Generic;26using System.Linq;27using System.Text;28using System.Threading.Tasks;29using FlaUI.Core.WindowsAPI;30{31    {32        static void Main(string[] args)33        {34            IntPtr dc1 = User32.CreateDC("DISPLAY", null, null, IntPtr.Zero);35            IntPtr dc2 = User32.CreateDC("DISPLAY", null, null, IntPtr.Zero);36            IntPtr dc3 = User32.CreateDC("DISPLAY", null, null, IntPtr.Zero);37            Console.WriteLine("Press any key to delete DCs");38            Console.ReadKey();39            User32.DeleteDC(dc1);40            User32.DeleteDC(dc2);41            User32.DeleteDC(dc3);42            Console.WriteLine("Press any key to exit");43            Console.ReadKey();44        }45    }46}47using System;48using System.Collections.Generic;49using System.Linq;50using System.Text;51using System.Threading.Tasks;52using FlaUI.Core.WindowsAPI;53{54    {55        static void Main(string[] args)56        {57            IntPtr dc1 = WinGdi.CreateDC("DISPLAY", null, null, IntPtr.Zero);58            IntPtr dc2 = WinGdi.CreateDC("DISPLAY", null, null, IntPtr.Zero);59            IntPtr dc3 = WinGdi.CreateDC("DISPLAY", null, null, IntPtr.Zero);

DeleteDC

Using AI Code Generation

1using FlaUI.Core.WindowsAPI;2using System;3using System.Drawing;4using System.Drawing.Imaging;5using System.Runtime.InteropServices;6using System.Windows.Forms;7{8    {9        public Form1()10        {11            InitializeComponent();12        }13        private void button1_Click(object sender, EventArgs e)14        {15            Graphics g = Graphics.FromHwnd(IntPtr.Zero);16            IntPtr hDC = g.GetHdc();17            IntPtr hBitmap = Gdi32.CreateCompatibleBitmap(hDC, 800, 600);18            IntPtr hMemDC = Gdi32.CreateCompatibleDC(hDC);19            IntPtr hOld = Gdi32.SelectObject(hMemDC, hBitmap);20            Gdi32.BitBlt(hMemDC, 0, 0, 800, 600, hDC, 0, 0, Gdi32.SRCCOPY);21            Gdi32.SelectObject(hMemDC, hOld);22            Gdi32.DeleteDC(hMemDC);23            Gdi32.ReleaseDC(IntPtr.Zero, hDC);24            Bitmap bmp = Bitmap.FromHbitmap(hBitmap);25            Gdi32.DeleteObject(hBitmap);26            bmp.Save("C:\\Users\\user\\Desktop\\test.bmp", ImageFormat.Bmp);27        }28    }29}

DeleteDC

Using AI Code Generation

1using FlaUI.Core.WindowsAPI;2using System;3using System.Drawing;4using System.Drawing.Imaging;5using System.Runtime.InteropServices;6using System.Windows.Forms;7{8    {9        public Form1()10        {11            InitializeComponent();12        }13        private void Form1_Paint(object sender, PaintEventArgs e)14        {15            var hdc = e.Graphics.GetHdc();16            var hBitmap = Gdi32.CreateCompatibleBitmap(hdc, 200, 200);17            var hMemDC = Gdi32.CreateCompatibleDC(hdc);18            var hOldBitmap = Gdi32.SelectObject(hMemDC, hBitmap);19            Gdi32.BitBlt(hMemDC, 0, 0, 200, 200, hdc, 0, 0, Gdi32.SRCCOPY);20            Gdi32.SelectObject(hMemDC, hOldBitmap);21            Gdi32.DeleteDC(hMemDC);22            Gdi32.DeleteObject(hBitmap);23            e.Graphics.ReleaseHdc(hdc);24        }25    }26}27using FlaUI.Core.WindowsAPI;28using System;29using System.Drawing;30using System.Drawing.Imaging;31using System.Runtime.InteropServices;32using System.Windows.Forms;33{34    {35        public Form1()36        {37            InitializeComponent();38        }39        private void Form1_Paint(object sender, PaintEventArgs e)40        {41            var hdc = e.Graphics.GetHdc();42            var hBitmap = Gdi32.CreateCompatibleBitmap(hdc, 200, 200);43            var hMemDC = Gdi32.CreateCompatibleDC(hdc);44            var hOldBitmap = Gdi32.SelectObject(hMemDC, hBitmap);45            Gdi32.BitBlt(hMemDC, 0, 0, 200, 200, hdc, 0, 0, Gdi32.SRCCOPY);46            Gdi32.SelectObject(hMemDC, hOldBitmap);47            Gdi32.DeleteDC(hMemDC);48            Gdi32.DeleteObject(hBitmap);49            e.Graphics.ReleaseHdc(hdc);50        }51    }52}53using FlaUI.Core.WindowsAPI;

DeleteDC

Using AI Code Generation

1using FlaUI.Core.WindowsAPI;2using System;3using System.Drawing;4using System.Drawing.Imaging;5using System.Runtime.InteropServices;6using System.Windows.Forms;7{8    {9        public Form1()10        {11            InitializeComponent();12        }13        private void button1_Click(object sender, EventArgs e)14        {15            var window = FlaUI.Core.Application.GetWindows()[0];16            var bitmap = window.Capture();17            bitmap.Save("C:\\Users\\Public\\Pictures\\Sample Pictures\\test.png", ImageFormat.Png);18        }19    }20}21using System;22using System.Runtime.InteropServices;23{24    {25        [DllImport("gdi32.dll")]26        public static extern bool DeleteDC(IntPtr hdc);27    }28}29using FlaUI.Core.WindowsAPI;30using System;31using System.Drawing;32using System.Drawing.Imaging;33using System.Runtime.InteropServices;34using System.Windows.Forms;35{36    {37        public Form1()38        {39            InitializeComponent();40        }41        private void button1_Click(object sender, EventArgs e)42        {43            var window = FlaUI.Core.Application.GetWindows()[0];44            var bitmap = window.Capture();45            bitmap.Save("C:\\Users\\Public\\Pictures\\Sample Pictures\\test.png", ImageFormat.Png);46            Gdi32.DeleteDC(bitmap.GetHbitmap());47        }48    }49}50using System;51using System.Runtime.InteropServices;52{53    {54        [DllImport("gdi32.dll")]55        public static extern bool DeleteDC(IntPtr hdc);56    }57}58using FlaUI.Core.WindowsAPI;59using System;60using System.Drawing;61using System.Drawing.Imaging;

DeleteDC

Using AI Code Generation

1using FlaUI.Core.WindowsAPI;2using System;3using System.Drawing;4using System.Drawing.Imaging;5using System.Runtime.InteropServices;6using System.Windows.Forms;7{8    {9        public Form1()10        {11            InitializeComponent();12        }13        private void button1_Click(object sender, EventArgs e)14        {15            Bitmap bmp = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);16            Graphics g = Graphics.FromImage(bmp);17            g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size);18            pictureBox1.Image = bmp;19            bmp.Save(@"C:\Users\Public\Pictures\Sample Pictures\test.jpg", ImageFormat.Jpeg);20            Gdi32.DeleteDC(bmp.GetHbitmap());21        }22    }23}

DeleteDC

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using FlaUI.Core.WindowsAPI;7{8    {9        [DllImport("gdi32.dll", SetLastError = true)]10        public static extern bool DeleteDC(IntPtr hdc);11    }12}13using System;14using System.Collections.Generic;15using System.Linq;16using System.Text;17using System.Threading.Tasks;18using FlaUI.Core.WindowsAPI;19{20    {21        [DllImport("gdi32.dll", SetLastError = true)]22        public static extern bool DeleteDC(IntPtr hdc);23    }24}25using System;26using System.Collections.Generic;27using System.Linq;28using System.Text;29using System.Threading.Tasks;30using FlaUI.Core.WindowsAPI;31{32    {33        [DllImport("gdi32.dll", SetLastError = true)]34        public static extern bool DeleteDC(IntPtr hdc);35    }36}37using System;38using System.Collections.Generic;39using System.Linq;40using System.Text;41using System.Threading.Tasks;42using FlaUI.Core.WindowsAPI;43{44    {45        [DllImport("gdi32.dll", SetLastError = true)]46        public static extern bool DeleteDC(IntPtr hdc);47    }48}49using System;50using System.Collections.Generic;51using System.Linq;52using System.Text;53using System.Threading.Tasks;54using FlaUI.Core.WindowsAPI;55{56    {57        [DllImport("gdi32.dll", SetLastError = true)]58        public static extern bool DeleteDC(IntPtr hdc);59    }60}61using System;62using System.Collections.Generic;63using System.Linq;

DeleteDC

Using AI Code Generation

1using FlaUI.Core.WindowsAPI;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7using System.Windows.Forms;8{9    {10        public Form1()11        {12            InitializeComponent();13        }14        private void button1_Click(object sender, EventArgs e)15        {16            FlaUI.Core.WindowsAPI.Gdi32.DeleteDC(new IntPtr(1));17        }18    }19}20Error 1   The type or namespace name 'Gdi32' does not exist in the namespace 'FlaUI.Core.WindowsAPI' (are you missing an assembly reference?)    C:\Users\user\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs  12  13  WindowsFormsApplication1

DeleteDC

Using AI Code Generation

1using FlaUI.Core.WindowsAPI;2using System;3using System.Drawing;4using System.Drawing.Imaging;5using System.Runtime.InteropServices;6using System.Windows.Forms;7using FlaUI.Core.WindowsAPI;8using System.Drawing;9using System.Drawing.Imaging;10using System.Runtime.InteropServices;11using System.Windows.Forms;12using FlaUI.Core;13using FlaUI.Core.AutomationElements;14using FlaUI.Core.WindowsAPI;15using System;16using System.Drawing;17using System.Drawing.Imaging;18using System.Runtime.InteropServices;19using System.Windows.Forms;20{21    {22        public Form1()23        {24            InitializeComponent();25        }26        private void button1_Click(object sender, EventArgs e)27        {28            var app = FlaUI.Core.Application.Launch("notepad.exe");29            var window = app.GetMainWindow(FlaUI.Core.WindowsAPI.WindowEnumerationStrategy.AllVisibleWindows);30            var automation = new FlaUI.Core.AutomationElements.AutomationBase();31            var element = automation.FromHandle(window);32            var element1 = element.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));33            var element2 = element1.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));34            var element3 = element2.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));35            var element4 = element3.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));36            var element5 = element4.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));37            var element6 = element5.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));38            var element7 = element6.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor"));39            var element8 = element7.FindFirstDescendant(FlaUI.Core.Definitions.TreeScope.Descendants, new FlaUI.Core.Definitions.ConditionFactory().ByName("Text Editor

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.