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我有一個PNG圖像,有透明的部分,如何設置這個PNG圖像像我的WinForms窗體的背景圖像,並沒有失去透明度?我使用C#。謝謝!從PNG創建透明窗體
我有一個PNG圖像,有透明的部分,如何設置這個PNG圖像像我的WinForms窗體的背景圖像,並沒有失去透明度?我使用C#。謝謝!從PNG創建透明窗體
這裏我寫了一個繪製表單的代碼。您可以根據我們的要求更改顏色和透明度。我使用顏色作爲表單的背景。您可以根據您的要求將其更改爲圖片。這是一個示例代碼。
首先,你需要創建一個包含這些功能
public enum FormType
{
MDI,
Child
}
public static void PaintFrom(Form frm, PaintEventArgs e, FormType formType)
{
if (formType == FormType.MDI)
{
Graphics mGraphics = e.Graphics;
Pen pen1 = new Pen(Color.FromArgb(96, 155, 173), 1);
Rectangle Area1 = new Rectangle(0, 0, frm.Width - 1, frm.Height - 1);
LinearGradientBrush LGB = new LinearGradientBrush(Area1, Color.FromArgb(96, 155, 173), Color.FromArgb(245, 251, 251), LinearGradientMode.Vertical);
mGraphics.FillRectangle(LGB, Area1);
mGraphics.DrawRectangle(pen1, Area1);
PictureBox picBox = new PictureBox();
Color backColor = Color.Transparent;
Bitmap bm = new Bitmap(ImagePath + "title_bar.png");
//frm.Controls.Add(picBox);
Point pt = new Point(0, 0);
picBox.Location = pt;
picBox.Image = bm;
picBox.Width = frm.Width - 1;
picBox.Height = 24;//frm.Height - 1;
picBox.BackColor = backColor;
picBox.BackgroundImageLayout = ImageLayout.Stretch;
PictureBox closeBox = new PictureBox();
//frm.Controls.Add(closeBox);
bm = new Bitmap(ImagePath + "close.gif");
pt = new Point(frm.Width - (bm.Width), -1);
closeBox.Location = pt;
closeBox.Image = bm;
closeBox.Width = bm.Width + 1;
closeBox.Height = bm.Width + 1;
closeBox.BackColor = backColor;
closeBox.BackgroundImageLayout = ImageLayout.Stretch;
PictureBox minBox = new PictureBox();
//frm.Controls.Add(closeBox);
bm = new Bitmap(ImagePath + "close.gif");
pt = new Point(frm.Width - (2*(bm.Width))-1, bm.Width);
minBox.Location = pt;
minBox.Image = bm;
minBox.Width = bm.Width + 1;
minBox.Height = bm.Width + 1;
minBox.BackColor = backColor;
minBox.BackgroundImageLayout = ImageLayout.Stretch;
frm.Controls.Add(picBox);
picBox.Controls.Add(closeBox);
picBox.Controls.Add(minBox);
minBox.Click+=new EventHandler(minBox_Click);
closeBox.Click += new EventHandler(closeBox_Click);
}
else
{
PaintForm(frm, e);
}
}
public static void PaintForm(Form frm, PaintEventArgs e)
{
Graphics mGraphics = e.Graphics;
Pen pen1 = new Pen(Color.FromArgb(96, 155, 173), 1);
Rectangle Area1 = new Rectangle(0, 0, frm.Width - 1, frm.Height - 1);
LinearGradientBrush LGB = new LinearGradientBrush(Area1, Color.FromArgb(96, 155, 173), Color.FromArgb(245, 251, 251), LinearGradientMode.Vertical);
mGraphics.FillRectangle(LGB, Area1);
mGraphics.DrawRectangle(pen1, Area1);
PictureBox picBox=new PictureBox();
Color backColor = Color.Transparent;
Bitmap bm=new Bitmap(ImagePath+"title_bar.png");
//frm.Controls.Add(picBox);
Point pt=new Point(0,0);
picBox.Location = pt;
picBox.Image = bm;
picBox.Width = frm.Width - 1;
picBox.Height = 24;//frm.Height - 1;
picBox.BackColor = backColor;
picBox.BackgroundImageLayout = ImageLayout.Stretch;
PictureBox closeBox = new PictureBox();
//frm.Controls.Add(closeBox);
bm = new Bitmap(ImagePath + "close.gif");
pt = new Point(frm.Width - (bm.Width), -1);
closeBox.Location = pt;
closeBox.Image = bm;
closeBox.Width = bm.Width + 1;
closeBox.Height = bm.Width + 1;
closeBox.BackColor = backColor;
closeBox.BackgroundImageLayout = ImageLayout.Stretch;
foreach (Control ctr in frm.Controls)
{
if (ctr.HasChildren)
{
if (ctr is DataGridView)
{
DataGridView dtg = ctr as DataGridView;
DataGridViewCellStyle dtstyle=new DataGridViewCellStyle();
dtstyle.BackColor = Color.FromArgb(96, 155, 173);
dtg.ColumnHeadersDefaultCellStyle = dtstyle;
}
else if (ctr is TextBox)
{
}
else if (ctr is TabControl)
{
}
else
{
ctr.BackColor = backColor;
}
}
if (ctr is Label)
{
ctr.BackColor = backColor;
}
}
frm.Controls.Add(picBox);
picBox.Controls.Add(closeBox);
closeBox.Click+=new EventHandler(closeBox_Click);
}
static void closeBox_Click(object sender, EventArgs e)
{
PictureBox close = sender as PictureBox;
PictureBox pic = close.Parent as PictureBox;
Form fm = pic.Parent as Form;
fm.Close();
}
static void minBox_Click(object sender, EventArgs e)
{
PictureBox min = sender as PictureBox;
PictureBox pic = min.Parent as PictureBox;
Form fm = pic.Parent as Form;
fm.WindowState = FormWindowState.Minimized;
}
然後,你需要調用Paint事件的形式和在此事件中的靜態類,你可以畫的形式,這樣
private void frmComplaints_Paint(object sender, PaintEventArgs e)
{
UI.Common.PaintForm(this, e);
}
我已經使用了這個函數的靜態類UI.Common,並且我爲標題欄使用了一個圖像。在你的情況下,你可以使用PNG圖像作爲背景。代碼中的ImagePath是一個常量變量,您可以在其中設置保存圖像的目錄的路徑
透明,因爲在完全不可見或部分不可見的情況下應該與背景混合? –
部分,應與背景混合,謝謝! – Kracken
你不能混合透明背景,沒有什麼可以混合。 –