C# development example-customized screenshot tool (9) using custom cursor and cursor when taking QQ screenshots (picture)

When using the screenshot function of QQ, do you think its cursor is cool? Today I will talk about how to apply a custom cursor and use the QQ screenshot cursor in our screenshot tool.

Open resource:

Switch to file resourceView:

Open the resource file directory and copy the cursor file to this directory:

Required cursorFile download ：C#Software development example. Customize the cursor file used in your own screenshot tool

Select the Resources directory and refresh, Display the cursor file just copied in:

Select the cursor file and drag it to the file view of the resource:

Resources The first letter of the word in the resource name is changed to uppercase.

Cursor preview:

Add private variable in Form1 class:

        #region 自定义光标
        System.Windows.Forms.Cursor cursorCross = null;
        System.Windows.Forms.Cursor cursorDefault = null;
        System.Windows.Forms.Cursor cursorText = null;
        System.Windows.Forms.Cursor cursorColor = null;
        #endregion

Add WindowsAPIStatement:

        [DllImport("user32.dll")]
        private static extern IntPtr LoadCursorFromFile(string fileName);

Add a method to obtain the cursor from existing resources:

        /// <summary>
        /// 从已有资源中获得光标
        /// </summary>
        /// <param name="resource"></param>
        /// <returns></returns>
        public static Cursor getCursorFromResource(byte[] resource)
        {
            byte[] b = resource;
            FileStream fileStream = new FileStream("cursorData.dat", FileMode.Create);
            fileStream.Write(b, 0, b.Length);
            fileStream.Close();
            Cursor cur = new Cursor(LoadCursorFromFile("cursorData.dat"));
            return cur;
        }

Add window initializationEvent handlingProgram, add a custom cursor:

        /// <summary>
        /// 窗口初始化事件处理程序
        /// </summary>
        private void Form1_Init()
        {
            this.isCuting = false;
            this.beginPoint = new Point(0, 0);
            this.endPoint = new Point(0, 0);

            cursorDefault = getCursorFromResource(Properties.Resources.Cursor_Default);
            cursorCross = getCursorFromResource(Properties.Resources.Cursor_Cross);
            cursorText = getCursorFromResource(Properties.Resources.Cursor_Text);
            cursorColor = getCursorFromResource(Properties.Resources.Cursor_Color);
        }

Set the default cursor, handle the cursor status :

Add in the else condition of the ShowForm method :

this.Cursor = cursorDefault;

Add code in the ExitCutImage method:

this.Cursor = cursorDefault;

Add the mouse to enter the Form1 form event handler:

        /// <summary>
        /// 鼠标进入Form1窗体事件处理程序
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form1_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = cursorDefault;
        }

Form1's constructor Add code:

Form1_Init();

Ok, compile, take a screenshot to see the effect!

Multiple cursor files have been added here, but only one is used. Others will be used in functions added in the future.

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