在項目開發中的窗體的設計會影響用戶對軟件的整體印象，因此窗體的效果要設計得美觀一些。
029 制作鼠標穿透窗體
在對桌面進行操作時，為了使桌面更加美觀，可以在桌面的上面加一層類似於玻璃的效果，用戶可以用鼠標透過“玻璃”對桌面進行操作。本實例通過使用鼠標穿透窗體類實現以上功能。主要用到了 API 函數 SetWindowLong 和 GetWindowLong。
1.創建一個項目，默認窗體為 Form1，將該窗體的 FormBordeStyle 屬性設置為 None，BackColor 屬性設置為 Gainsboro，Opacity 屬性設置為 60%，WindowState 屬性設置為 Maximized。
2.在 Form1 窗體中添加一個 NotifyIcon 控件，並設置其 Icon 屬性為指定的圖標，顯示提示信息；添加一個 ContextMenuStrip 控件，作為程序的快捷菜單。
namespace _029_MouseThroughForm
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private const uint WS_EX_LAYERED = 0x80000;
private const int WS_EX_TRANSPARENT = 0x20;
private const int GWL_EXSTYLE = (-20);
private string Var_genre = "";//記錄當前操作的類型
#region 在窗口結構中為指定的窗口設置信息
/// <summary>
/// 在窗口結構中為指定的窗口設置信息
/// </summary>
/// <param name="hwnd">欲為其取得信息的窗口的句柄</param>
/// <param name="nIndex">欲取回的信息</param>
/// <param name="dwNewLong">由nIndex指定的窗口信息的新值</param>
/// <returns></returns>
[DllImport("user32", EntryPoint = "SetWindowLong")]
private static extern uint SetWindowLong(IntPtr hwnd, int nIndex, uint dwNewLong);
#endregion
#region 從指定窗口的結構中取得信息
/// <summary>
/// 從指定窗口的結構中取得信息
/// </summary>
/// <param name="hwnd">欲為其獲取信息的窗口的句柄</param>
/// <param name="nIndex">欲取回的信息</param>
/// <returns></returns>
[DllImport("user32", EntryPoint = "GetWindowLong")]
private static extern uint GetWindowLong(IntPtr hwnd, int nIndex);
#endregion
#region 使窗口有鼠標穿透功能
/// <summary>
/// 使窗口有鼠標穿透功能
/// </summary>
private void CanPenetrate()
{
uint intExTemp = GetWindowLong(this.Handle, GWL_EXSTYLE); //從當前窗口的結構中取得信息
//在窗口結構中為當前窗口設置信息
uint oldGWLEx = SetWindowLong(this.Handle, GWL_EXSTYLE, WS_EX_TRANSPARENT | WS_EX_LAYERED);
}
#endregion
private void Form1_Load(object sender, EventArgs e)
{
this.ShowInTaskbar = false;//窗體不出現在Windows任務欄中
CanPenetrate();//自定義方法，用來通過API函數SetWindowLong和GetWindowLong實現鼠標的穿透效果
this.TopMost = true;//使窗體始終在其它窗體之上
}
#region 設置顏色和透明度的狀態
/// <summary>
/// 設置顏色和透明度的狀態
/// </summary>
private void SetEstate(Form Frm, object sender)
{
Var_genre = ((ToolStripMenuItem)sender).Name;
string Tem_Str = Var_genre;
if (Var_genre.IndexOf('_') >= 0)
{
Var_genre = Tem_Str.Substring(0, Tem_Str.IndexOf('_'));
}
switch (Var_genre)
{
case "ToolColor":
{
Color Tem_Color = Color.Gainsboro;
switch (Convert.ToInt32(((ToolStripMenuItem)sender).Tag.ToString()))
{
case 1: Tem_Color = Color.Gainsboro; break;
case 2: Tem_Color = Color.DarkOrchid; break;
case 3: Tem_Color = Color.RoyalBlue; break;
case 4: Tem_Color = Color.Gold; break;
case 5: Tem_Color = Color.LightGreen; break;
}
Frm.BackColor = Tem_Color;
break;
}
case "ToolClarity":
{
double Tem_Double = 0.0;
switch (Convert.ToInt32(((ToolStripMenuItem)sender).Tag.ToString()))
{
case 1: Tem_Double = 0.1; break;
case 2: Tem_Double = 0.2; break;
case 3: Tem_Double = 0.3; break;
case 4: Tem_Double = 0.4; break;
case 5: Tem_Double = 0.5; break;
case 6: Tem_Double = 0.6; break;
case 7: Tem_Double = 0.7; break;
case 8: Tem_Double = 0.8; break;
case 9: Tem_Double = 0.9; break;
}
Frm.Opacity = Tem_Double;
break;
}
case "ToolAcquiescence":
{
Frm.BackColor = Color.Gainsboro;
Frm.Opacity = 0.6;
break;
}
case "ToolClose":
{
Close();
break;
}
}
}
#endregion
private void ToolColor_Glass_Click(object sender, EventArgs e)
{
SetEstate(this, sender);
}
}
}
030 窗體換膚程序
本實例的基本原理是給窗體的各個組成部分更換圖片，基於該原理，首先需要分析窗體的組成部分，主要包括標題欄、左邊框、右邊框、下邊框、窗體中間區域及可能存在的菜單欄，其中標題欄和3個邊框無法通過設置相關屬性來達到更換背景圖片的目的。對於這個問題，可以通過取消窗體的 FormBorderStyle 屬性，同時在標題欄和3個邊框的位置添加 Panel 控件來解決，然後通過選擇不同的皮膚類型，為窗體的各個組成部分設置圖片，最終達到窗體換膚的效果。在以上過程中，最主要的技術問題是如何從指定的文件創建 Image 對象，以及如何獲取圖片的路徑。
1.創建一個項目，默認窗體為 Form1，設置 Form1 的 AutoscaleMode 屬性為 Inherit，DoubleBuffered 屬性為 True，IsMdiContainer 屬性為 True。
2.在窗體中添加6個 Panel 控件，分別用來作為窗體的標題欄、下邊框、左邊框、右邊框、左下角邊框和右下角邊框；添加一個 ContextMenuStrip 控件，用來作為更換皮膚的快捷菜單；添加3個 PictureBox 控件，分別用來顯示最大化、最小化和關閉圖片。
namespace _030_WinCusSkin
{
public partial class Form1 : Form
{
String strImagesPath = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0, Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
int top, left, hei, wid;
bool bol = false, bo = false, bolTop = false, bolLeft = false, bolRight = false, bolBottom = false, bolLeftCornu = false, bolRightCornu = false;
int x = 0, y = 0;
public Form1()
{
InitializeComponent();
}
//關閉事件。
private void picClose_Click(object sender, System.EventArgs e)
{
Application.Exit();
}
//最大化事件。
private void picMaximize_Click(object sender, System.EventArgs e)
{
if (!bol) //若窗體處於普通狀態
{
top = this.Top; //獲取窗體的Top屬性值
left = this.Left; //獲取窗體的Left屬性值
hei = this.Height; //獲取窗體的Height屬性值
wid = this.Width; //獲取窗體的Width屬性值
this.Top = 0; //設置窗體的Top屬性值為零
this.Left = 0; //設置窗體的Left屬性值為零
int hg = SystemInformation.MaxWindowTrackSize.Height; //獲取窗口的默認最大高度
int wh = SystemInformation.MaxWindowTrackSize.Width; //獲取窗口的默認最大寬度
this.Height = hg; //設置窗體的Height屬性值
this.Width = wh; //設置窗體的Width屬性值
bol = true; //設置窗體標記表示最大化
if (menItemSkin1.Checked) //若選擇“紫色小花”菜單項，設置最大化圖片的Image屬性
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\purple\max.png");
if (menItemSkin2.Checked) //若選擇“藍色經典”菜單項，設置最大化圖片的Image屬性
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\blue\max.png");
if (menItemSkin3.Checked) //若選擇“綠色菜園”菜單項，設置最大化圖片的Image屬性
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\green\max.png");
}
else //若窗體處於最大化狀態
{
this.Top = top; //設置窗體的Top屬性值
this.Left = left; //設置窗體的Left屬性值
this.Height = hei; //設置窗體的Height屬性值
this.Width = wid; //設置窗體的Width屬性值
bol = false; //設置窗體標記表示普通狀態
if (menItemSkin1.Checked)
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\purple\max_Normal.png");
if (menItemSkin2.Checked)
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\blue\max_Normal.png");
if (menItemSkin3.Checked)
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\green\max_Normal.png");
}
}
//最小化事件。
private void picMinimize_Click(object sender, System.EventArgs e)
{
top = this.Top;
left = this.Left;
hei = this.Height;
wid = this.Width;
this.Height = 0;
this.Width = 0;
bo = true;
}
//窗口再次被激活時。
private void Form_Activated(object sender, System.EventArgs e)
{
if (bo)
{
this.Top = top;
this.Left = left;
this.Height = hei;
this.Width = wid;
bo = false;
}
}
//選擇關閉。
private void mItemColse_Click(object sender, System.EventArgs e)
{
Application.Exit();
}
//上邊框鼠標按下。
private void panel_Top_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
x = e.X;
y = e.Y;
this.bolTop = true;
}
//上邊框鼠標移動。
private void panel_Top_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (bolTop)
{
this.Top += e.Y - y;
this.Left += e.X - x;
}
}
//上邊框鼠標釋放。
private void panel_Top_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.bolTop = false;
}
//左邊框鼠標按下。
private void panel_Left_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
x = e.X;
this.bolLeft = true;
}
//左邊框鼠標移動。
private void panel_Left_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (bolLeft)
{
this.Width += x - e.X;
this.Left += e.X - x;
}
}
//左邊框鼠標離開。
private void panel_Left_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.bolLeft = false;
}
//右邊框鼠標按下。
private void panel_Right_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
x = e.X;
this.bolRight = true;
}
//右邊框鼠標移動。
private void panel_Right_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (bolRight)
{
this.Width += e.X - x;
}
}
//右邊框鼠標離開。
private void panel_Right_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.bolRight = false;
}
//下邊框鼠標按下。
private void panel_Bottom_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
y = e.Y;
this.bolBottom = true;
}
//下邊框鼠標移動。
private void panel_Bottom_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (bolBottom)
{
this.Height += e.Y - y;
}
}
//下邊框鼠標離開。
private void panel_Bottom_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.bolBottom = false;
}
//左下角鼠標按下。
private void panelLeftCornu_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
x = e.X;
y = e.Y;
this.bolLeftCornu = true;
}
//左下角鼠標移動。
private void panelLeftCornu_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (bolLeftCornu)
{
this.Width += x - e.X;
this.Left += e.X - x;
this.Height += e.Y - y;
}
}
//左下角鼠標離開。
private void panelLeftCornu_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
x = e.X;
y = e.Y;
this.bolLeftCornu = false;
}
//右下角鼠標按下。
private void panelRightCornu_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.bolRightCornu = true;
}
//右下角鼠標移動。
private void panelRightCornu_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (bolRightCornu)
{
this.Width += e.X - x;
this.Height += e.Y - y;
}
}
//右下角鼠標離開。
private void panelRightCornu_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.bolRightCornu = false;
}
private void Form_Load(object sender, EventArgs e)
{
menItemSkin2_Click(sender, e);//默認藍色經典
}
private void menItemSkin1_Click(object sender, EventArgs e)
{
//設置Panel控件的BackgroundImage屬性
this.panel_Top.BackgroundImage = Image.FromFile(strImagesPath + @"\images\purple\top.png");
this.panel_Left.BackgroundImage = Image.FromFile(strImagesPath + @"\images\purple\left.png");
this.panel_Right.BackgroundImage = Image.FromFile(strImagesPath + @"\images\purple\right.png");
this.panel_Bottom.BackgroundImage = Image.FromFile(strImagesPath + @"\images\purple\bottom.png");
//設置最小化圖片控件的Image屬性
this.picMinimize.Image = Image.FromFile(strImagesPath + @"\images\purple\min.png");
if (bol == true) //若當前窗體處於最大化狀態
{
//設置最大化圖片控件的Image屬性
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\purple\max.png");
}
else
{
//設置最大化圖片控件的Image屬性
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\purple\max_normal.png");
}
//設置關閉圖片控件的Image屬性
this.picClose.Image = Image.FromFile(strImagesPath + @"\images\purple\close.png");
//設置菜單的選中標記
this.menItemSkin1.Checked = true;
this.menItemSkin2.Checked = false;
this.menItemSkin3.Checked = false;
//設置窗體主菜單的背景圖像屬性
this.menuStrip1.BackgroundImage = Image.FromFile(strImagesPath + @"\images\purple\menu.gif");
//設置窗體的背景圖像屬性
this.BackgroundImage = Image.FromFile(strImagesPath + @"\images\purple\background.gif");
}
private void menItemSkin2_Click(object sender, EventArgs e)
{
this.panel_Top.BackgroundImage = Image.FromFile(strImagesPath + @"\images\blue\top.png");
this.panel_Left.BackgroundImage = Image.FromFile(strImagesPath + @"\images\blue\left.png");
this.panel_Right.BackgroundImage = Image.FromFile(strImagesPath + @"\images\blue\right.png");
this.panel_Bottom.BackgroundImage = Image.FromFile(strImagesPath + @"\images\blue\bottom.png");
this.picMinimize.Image = Image.FromFile(strImagesPath + @"\images\blue\min.png");
if (bol == true)
{
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\blue\max.png");
}
else
{
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\blue\max_normal.png");
}
this.picClose.Image = Image.FromFile(strImagesPath + @"\images\blue\close.png");
this.menItemSkin1.Checked = false;
this.menItemSkin2.Checked = true;
this.menItemSkin3.Checked = false;
this.menuStrip1.BackgroundImage = Image.FromFile(strImagesPath + @"\images\blue\menu.gif");
this.BackgroundImage = Image.FromFile(strImagesPath + @"\images\blue\background.gif");
}
private void menItemSkin3_Click(object sender, EventArgs e)
{
this.panel_Top.BackgroundImage = Image.FromFile(strImagesPath + @"\images\green\top.png");
this.panel_Left.BackgroundImage = Image.FromFile(strImagesPath + @"\images\green\left.png");
this.panel_Right.BackgroundImage = Image.FromFile(strImagesPath + @"\images\green\right.png");
this.panel_Bottom.BackgroundImage = Image.FromFile(strImagesPath + @"\images\green\bottom.png");
this.picMinimize.Image = Image.FromFile(strImagesPath + @"\images\green\min.png");
if (bol == true)
{
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\green\max.png");
}
else
{
this.picMaximize.Image = Image.FromFile(strImagesPath + @"\images\green\max_normal.png");
}
this.picClose.Image = Image.FromFile(strImagesPath + @"\images\green\close.png");
this.menItemSkin1.Checked = false;
this.menItemSkin2.Checked = false;
this.menItemSkin3.Checked = true;
this.menuStrip1.BackgroundImage = Image.FromFile(strImagesPath + @"\images\green\menu.gif");
this.BackgroundImage = Image.FromFile(strImagesPath + @"\images\green\background.gif");
}
private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void panel_Top_DoubleClick(object sender, EventArgs e)
{
picMaximize_Click(sender, e);
}
}
}
