我正在使用C＃窗体，我无法重新定位Picturebox图像。
我要做的是查看显示器的分辨率并将表单设置为全屏，然后将图片框设置为表格内的全屏。
在设计器中将Windowstate设置为Maximized，在Designer中将FormBorderstyle设置为None。
void Monitorresolution()
{
// grabs the resolution of the monitor
Screen screen = Screen.PrimaryScreen;
screenWidth = screen.Bounds.Width;
screenHeight = screen.Bounds.Height;
//MessageBox.Show("height = " + screenWidth + "/n" + "Width = " + screenHeight);
// grabs the resolution of the monitor
// sets the size of the window of Pictureviewer
this.ClientSize = new Size(screenWidth, screenHeight);
// sets the size of the window of Pictureviewer
// sets the size of the picturebox
pictureBox1.Size = new Size(screenWidth, screenHeight);
// sets the size of the picturebox
// sets the size of the image inside picturebox
pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
// sets the size of the image inside picturebox
// center the image
pictureBox1.Location = new Point((pictureBox1.Parent.ClientSize.Width / 2) - (pictureBox1.Width / 2), (pictureBox1.Parent.ClientSize.Height / 2) - (pictureBox1.Height / 2));
// center the image
// anchors the picturebox
pictureBox1.Anchor = AnchorStyles.None;
// MessageBox.Show("WTF");
pictureBox1.Refresh();
}
图像将偏离中心，除非我删除评论任何消息框语句。 打开消息框后，图像将完美居中。
为什么会发生这种情况，我该怎么做才能解决它。
由于 安迪
我正在展示更多代码，以便更好地了解我正在做什么以及为什么pictureBox1.Dock = DockStyle.Fill; 在这种情况下，对我不起作用。
我稍微重新排序了代码并将调整大小代码放在form_load代码中。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Image_Viewer
{
public partial class imageViewer : Form
{
System.Drawing.Point mouseDown;
int newWidth = 0;
int newHeight = 0;
int newX = 0;
int newY = 0;
int screenWidth;
int screenHeight;
public imageViewer()
{
InitializeComponent();
var frm2 = new exitform();
frm2.FormClosed += (o, e) => this.Close();
frm2.Show();
}
private void imageViewer_FormClosed(object sender, FormClosedEventArgs e)
{
}
private void imageViewer_Load(object sender, EventArgs e)
{
using (OpenFileDialog dlg = new OpenFileDialog())
{
dlg.Title = "Open Image";
dlg.Filter = "JPG|*.jpg;*.jpeg|PNG|*.png|TIFF|*.tif;*.tiff|BMP|*.bmp|GIF|*.gif|" + "All Graphics Types|*.bmp;*.jpg;*.jpeg;*.png;*.tif;*.tiff";
if (dlg.ShowDialog() == DialogResult.OK)
{
using (var fs = new System.IO.FileStream(dlg.FileName, System.IO.FileMode.Open))
{
var bmp = new Bitmap(fs);
pictureBox1.Image = bmp;
Invalidate();
}
}
}
// grabs the resolution of the monitor
Screen screen = Screen.PrimaryScreen;
screenWidth = screen.Bounds.Width;
screenHeight = screen.Bounds.Height;
// MessageBox.Show("height = " + screenHeight + "\n" + "Width = " + screenWidth);
// grabs the resolution of the monitor
// sets the size of the window of Pictureviewer
this.ClientSize = new Size(screenWidth, screenHeight);
// sets the size of the window of Pictureviewer
pictureBox1.Size = new Size(screenWidth, screenHeight);
pictureBox1.Location = new Point((ClientSize.Width / 2) - (pictureBox1.Width / 2), (ClientSize.Height / 2) - (pictureBox1.Height / 2));
// MessageBox.Show("When this message box pops, everything seems to work, no idea why though");
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
MouseEventArgs mouse = e as MouseEventArgs;
if (mouse.Button == MouseButtons.Left)
{
mouseDown = mouse.Location;
pictureBox1.Dock = DockStyle.None;
}
else if (mouse.Button == MouseButtons.Right)
{
// Do something else, not important in this example
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
MouseEventArgs mouse = e as MouseEventArgs;
if (mouse.Button == MouseButtons.Left)
{
// Pan functions
Point mousePosNow = mouse.Location;
int deltaX = mousePosNow.X - mouseDown.X;
int deltaY = mousePosNow.Y - mouseDown.Y;
int newX = pictureBox1.Location.X + deltaX;
int newY = pictureBox1.Location.Y + deltaY;
pictureBox1.Location = new Point(newX, newY);
}
else if (mouse.Button == MouseButtons.Right)
{
this.Close();
}
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
MouseEventArgs mouse = e as MouseEventArgs;
if (mouse.Button == MouseButtons.Left)
{
Point mousePosNow = mouse.Location;
int deltaX = mousePosNow.X - mouseDown.X;
int deltaY = mousePosNow.Y - mouseDown.Y;
int newX = pictureBox1.Location.X + deltaX;
int newY = pictureBox1.Location.Y + deltaY;
pictureBox1.Location = new Point(newX, newY);
}
}
protected override void OnMouseWheel(MouseEventArgs e)//zoom function
{
if (e.Delta > 0)
{
newWidth = pictureBox1.Size.Width + (pictureBox1.Size.Width / 10);
newHeight = pictureBox1.Size.Height + (pictureBox1.Size.Height / 10);
newX = pictureBox1.Location.X - ((pictureBox1.Size.Width / 10) / 2);
newY = pictureBox1.Location.Y - ((pictureBox1.Size.Height / 10) / 2);
}
else if (e.Delta < 0)
{
newWidth = pictureBox1.Size.Width - (pictureBox1.Size.Width / 10);
newHeight = pictureBox1.Size.Height - (pictureBox1.Size.Height / 10);
newX = pictureBox1.Location.X + ((pictureBox1.Size.Width / 10) / 2);
newY = pictureBox1.Location.Y + ((pictureBox1.Size.Height / 10) / 2);
}
pictureBox1.Size = new Size(newWidth, newHeight);
pictureBox1.Location = new Point(newX, newY);
}
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Image_Viewer
{
public partial class exitform : Form
{
private const int CP_NOCLOSE_BUTTON = 0x200;
public exitform()
{
InitializeComponent();
}
protected override CreateParams CreateParams
{
get
{
CreateParams myCp = base.CreateParams;
myCp.ClassStyle = myCp.ClassStyle | CP_NOCLOSE_BUTTON;
return myCp;
}
}
private void button1_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
我只显示表单2的代码只是为了显示一个退出按钮。我将它显示在表单1的顶部，然后从两者中删除关闭按钮。
AppDeveloper我确实尝试了你发布的代码，但是在我的情况下它不起作用，我将以较小的形式重试以进行测试。我发现奇怪的是，它出于某种原因在消息框之后工作。
由于 安迪
答案 0 :(得分：2)
pictureBox1位置置于其托管的Form的中心位置（即家长控制/表格）。我不确定为什么要将图像置于PrimaryScreen
将PictureBox居中的更好方法是订阅Form.Resize事件并动态调整pixtureBox1位置。
private void Form1_Load(object sender, EventArgs e)
{
this.Resize += Form1_Resize;
}
private void Form1_Resize(object sender, EventArgs e)
{
pictureBox1.Left = (this.Width - pictureBox1.Width)/2;
pictureBox1.Top = (this.Height - pictureBox1.Height)/2;
}
答案 1 :(得分：2)
正如我所见，您正在设置picturebox的大小=表单的大小。在你的情况下，最好只设置
pictureBox1.Dock = DockStyle.Fill;
忘记设置尺寸/适当调整大小：）
答案 2 :(得分：0)
我更喜欢C ++ CLI，但下一个例子应该是明确的。
Void MyForm::SetFullScreen(Boolean value)
{
if (value == FullScreen)
return;
if (value)
{
// DO NOT REORDER!!!
this->LastWindowState = WindowState;
this->WindowState = FormWindowState::Normal;
this->LastWindowBounds = Bounds;
this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::None;
this->Bounds = Screen::PrimaryScreen->Bounds;
}
else
{
// DO NOT REORDER!!!
this->WindowState = LastWindowState;
this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::Sizable;
this->Bounds = LastWindowBounds;
}
Int32 NewX = (pictureBox1.Parent.ClientSize.Width / 2) - (pictureBox1.Width / 2);
Int32 NewY = (pictureBox1.Parent.ClientSize.Height / 2) - (pictureBox1.Height / 2);
pictureBox1.Location = new Point(NewX, NewY);
pictureBox1.Anchor = AnchorStyles.None;
// finally save the actual state
FullScreen = value;
}
答案 3 :(得分：0)
我终于找到了问题所在
我错过了码头风格。如果我将其插入
下面pictureBox1.Location = new Point((ClientSize.Width / 2) - (pictureBox1.Width / 2), (ClientSize.Height / 2) - (pictureBox1.Height / 2));
pictureBox1.Dock = DockStyle.Top;
每次似乎都很完美。
感谢所有为我看过这个的人。
安迪