Windows Forms: Creating Effect Winform using AnimateWindow in C#

Creating a new Windows Forms Application project, then drag Button and PictureBox controls from the visual studio toolbox to your winform.

We will use Win32 API to create animation to winform, you should create the AnimateWindowFlags enum as shown below.

enum AnimateWindowFlags : uint
{
    AW_HOR_POSITIVE = 0x00000001,
    AW_HOR_NEGATIVE = 0x00000002,
    AW_VER_POSITIVE = 0x00000004,
    AW_VER_NEGATIVE = 0x00000008,
    AW_CENTER = 0x00000010,
    AW_HIDE = 0x00010000,
    AW_ACTIVATE = 0x00020000,
    AW_SLIDE = 0x00040000,
    AW_BLEND = 0x00080000
}

Next, Declare the AnimateWindows Win32 API as the following c# code.

[DllImport("user32.dll")]
static extern bool AnimateWindow(IntPtr hWnd, int time, AnimateWindowFlags flags);

Adding the click event handler to the Show Form button allows you to add animation to your form.

private void button1_Click(object sender, EventArgs e)
{
    Form1 frm = new Form1();
    AnimateWindow(frm.Handle, 1000, AnimateWindowFlags.AW_ACTIVATE | AnimateWindowFlags.AW_BLEND);
    frm.ShowDialog();
}

Adding the click event handler to the Show Form button allows you to add animation to your form.

private void button2_Click(object sender, EventArgs e)
{
    Form1 frm = new Form1();
    AnimateWindow(frm.Handle, 1000, AnimateWindowFlags.AW_SLIDE | AnimateWindowFlags.AW_CENTER | AnimateWindowFlags.AW_ACTIVATE);
    frm.ShowDialog();
}

Adding the click event handler to the Show Control button allows you to add animation to your control.

private void button3_Click(object sender, EventArgs e)
{
    AnimateWindow(pictureBox1.Handle, 1000, AnimateWindowFlags.AW_SLIDE | AnimateWindowFlags.AW_CENTER | AnimateWindowFlags.AW_HIDE);
}

Adding the click event handler to the Hide Control button allows you to add animation to your control.

private void button4_Click(object sender, EventArgs e)
{
    AnimateWindow(pictureBox1.Handle, 1000, AnimateWindowFlags.AW_SLIDE | AnimateWindowFlags.AW_CENTER | AnimateWindowFlags.AW_ACTIVATE);
}