如何拖放图像? C# [英] how to drag and drop an image? C#

问题描述

我正在为游戏制作一个简单的2D地图制作器.只需用户单击一个将显示打开文件"对话框的按钮.用户选择一个文件并加载到PictureBox中.然后，如果用户要将其添加到游戏世界(面板)中，则他/她单击添加按钮，面板将加载图片.我遇到的麻烦是能够在该面板中拖放图像.感谢您的帮助.

Windows 7 Visual C#Winform

谢谢，

Hi, I am making a simple 2D map maker for games. Simply the user clicks on a button that will show a openfiledialog. The user chooses a file and is loaded in a PictureBox. Then if the user wants to add it to the game world(panel) he/she clicks on the add button and the panel will load the picture. What I am having trouble with is being able to drag and drop the image within that panel. I will appreciate your help.

windows 7 visual C# winform

thanks,

推荐答案

msdn资源:

http://msdn.microsoft.com/en-us/library/ms171546.aspx

和
http://msdn.microsoft.com/en-us/library/za0zx9y0.aspx

msdn resources:

http://msdn.microsoft.com/en-us/library/ms171546.aspx

and
http://msdn.microsoft.com/en-us/library/za0zx9y0.aspx

您好，

我认为这可以帮助您:

Hello,

I think this can help:

private bool isPictureReadyToDrag;
private void SetPosition()
{
     MyPictureBox.Location = new Point(MousePosition.X - this.Left - MyPictureBox.Width / 2, MousePosition.Y - this.Top - MyPictureBox.Height);
}

private void MyPictureBox_MouseMove(object sender, MouseEventArgs e)
{
     if (isPictureReadyToDrag)
         SetPosition();
}

private void MyPictureBox_MouseUp(object sender, MouseEventArgs e)
{
     isPictureReadyToDrag = false;
}

private void MyPictureBox_MouseDown(object sender, MouseEventArgs e)
{
     isPictureReadyToDrag = true;
     SetPosition();
}

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