private void Form1_Paint(object sender, PaintEventArgs e)
{
int i, j, h, w, d, m = 3, n = 10;
// j contor dreptunghiuri
// i contor dreptunghiuri concentrice
// m nr dreptunghiuri
// n nr dreptunghiuri concentrice
System.Drawing.Graphics Desen;
Desen = this.CreateGraphics();
System.Drawing.Pen Creion_albastru;
Creion_albastru = new System.Drawing.Pen(System.Drawing.Color.Blue);
Desen.Clear(this.BackColor);
h = this.Height - 30; //inaltimea maxima a dreptunghiurilor
w = this.Width / m; //latimea maxima a dreptunghiului
d = w / 2 / n; // distanta intre doua dreptunghiuri concentrice
j = 0;
while (j <= m * w)
{
i = 0;
while (i <= d * n)
{
Desen.DrawRectangle(Creion_albastru, j + i + 10, i + 10, (w - 20 - 2 * i), (h - 20 - 2 * i));
i += d;
}
j += w;
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
int i, x1, y1, w, h;
System.Drawing.Graphics Desen;
System.Drawing.SolidBrush Pens_g, Pens_w;
System.Drawing.Pen Creion_g;
Desen = this.CreateGraphics();
Pens_g = new System.Drawing.SolidBrush(System.Drawing.Color.LightGray);
Pens_w = new System.Drawing.SolidBrush(System.Drawing.Color.WhiteSmoke);
Creion_g = new System.Drawing.Pen(System.Drawing.Color.Gray, 3);
System.Random n = new System.Random();
Desen.Clear(this.BackColor);
i = 0;
while (i <= 50)
{
x1 = n.Next(this.Width);
y1 = n.Next(this.Height);
w = n.Next(75);
h = this.Height - y1;
if (i % 2 == 0)
{
Desen.DrawRectangle(Creion_g, x1, y1, w, h);
Desen.FillRectangle(Pens_g, x1 + 1, y1 + 1, w - 1, h - 1);
}
else
{
Desen.DrawRectangle(Creion_g, x1, y1, w, h);
Desen.FillRectangle(Pens_w, x1 + 1, y1 + 1, w - 1, h - 1);
}
i++;
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
int x0, y0, w, h, i;
x0 = 200;
y0 = 150;
w = 200;
h = 100;
System.Drawing.Graphics Desen;
Desen = this.CreateGraphics();
System.Drawing.Pen Creion_albastru;
Creion_albastru = new System.Drawing.Pen(System.Drawing.Color.Blue);
for (i = 1; i <= 15; i++)
{
Desen.DrawRectangle(Creion_albastru, x0 - i * 5, y0 - i * 5, w, h);
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
System.Drawing.Graphics Desen;
Desen = this.CreateGraphics();
System.Drawing.Pen Creion_albastru;
Creion_albastru = new System.Drawing.Pen(System.Drawing.Color.Blue);
System.Drawing.SolidBrush Pensula_roz;
Pensula_roz = new System.Drawing.SolidBrush(System.Drawing.Color.Pink);
Desen.FillRectangle(Pensula_roz, 100, 60, 300, 300);
Desen.DrawRectangle(Creion_albastru, 105, 65, 290, 290);
Desen.DrawEllipse(Creion_albastru, 105, 65, 290, 290);
Desen.DrawEllipse(Creion_albastru, 145, 65, 200, 290);
Desen.DrawLine(Creion_albastru, 250, 65, 250, 355);
Desen.DrawLine(Creion_albastru, 105, 65, 395, 355);
Desen.DrawLine(Creion_albastru, 105, 355, 395, 65);
Desen.DrawLine(Creion_albastru, 105, 210, 395, 210);
}
private void timer1_Tick(object sender, EventArgs e)
{
int i = 0;
bool repeta = true;
System.Drawing.Graphics Desen;
Desen = this.CreateGraphics();
System.Drawing.Pen Creion_rosu;
System.Drawing.Pen Creion_albastru;
System.Random n = new System.Random();
Desen.Clear(this.BackColor);
i = 0;
for (i = 1; i <= 100; i++)
{
Creion_albastru = new System.Drawing.Pen(System.Drawing.Color.FromArgb(n.Next(256), n.Next(256), n.Next(256)));
Creion_rosu = new System.Drawing.Pen(System.Drawing.Color.FromArgb(n.Next(256), n.Next(256), n.Next(256)));
Desen.DrawRectangle(Creion_albastru, n.Next(this.Width), n.Next(this.Height), n.Next(75), n.Next(50));
Desen.DrawEllipse(Creion_rosu, n.Next(this.Width), n.Next(this.Height), n.Next(50), n.Next(75));
}
}
private void button1_Click(object sender, EventArgs e)
{
System.Drawing.Graphics Desen;
Desen = this.CreateGraphics();
System.Drawing.Pen Creion_albastru;
System.Drawing.SolidBrush Pensula_albastra;
Pensula_albastra = new System.Drawing.SolidBrush(System.Drawing.Color.Blue);
Creion_albastru = new System.Drawing.Pen(System.Drawing.Color.Blue);
if (this.radioButton1.Checked)
{
Desen.DrawLine(Creion_albastru, 150, 50, 350, 100);
}
if (this.radioButton2.Checked)
{
Desen.Clear(this.BackColor);
Desen.DrawRectangle(Creion_albastru, 250, 50, 200, 100);
}
if (this.radioButton3.Checked)
{
Desen.Clear(this.BackColor);
Desen.DrawEllipse(Creion_albastru, 250, 150, 105, 105);
}
if (this.radioButton4.Checked)
{
Desen.Clear(this.BackColor);
Desen.DrawEllipse(Creion_albastru, 150, 50, 95, 200);
}
if (this.radioButton5.Checked)
{
Desen.Clear(this.BackColor);
Desen.FillRectangle(Pensula_albastra, 250, 50, 200, 100);
}
if (this.radioButton6.Checked)
{
Desen.Clear(this.BackColor);
Desen.FillEllipse(Pensula_albastra, 150, 50, 95, 200);
}
}