Winform screenshot form figure-CodePudding

Below is I added the ChromiumWebBrowser CefSharp components, in actual operation of form is I show that this control, but I don't intercept the form of diagram shows the browser controls, I changed some of its background color, border lines can be displayed, do not know why, please help have a look at the great god, the question has bothered me for a long time QWQ

In fact, I demand is separate browser intercept screenshots, initially intercept down browser screen is blank, can't find the problem just had the following test

Interception of the form:

Actual running form:

Code:

 
Private static ChromiumWebBrowser browser=new ChromiumWebBrowser (" http://www.baidu.com "); 

Private void Form2_Load (object sender, EventArgs e) 
{
The FrameLoadEnd +=new EventHandler<frameLoadEndEventArgs> (browser_FrameLoadEnd); 
The Visible=true; 
The Dock=DockStyle. The Fill; 
GroupBox1. Controls. The Add (browser); 
} 
Private void browser_FrameLoadEnd (object obj, EventArgs e) 
{
Int width=this. Width; 
Int height=this. Height; 
Bitmap Bitmap=new Bitmap (width, height);//create a canvas size 
A Rectangle Rectangle=new Rectangle (0, 0, width, height);//painting area 
The DrawToBitmap (bitmap, rectangle); 
Bitmap. The Save (" D: \ \ test. JPG ", System. Drawing. The Imaging. ImageFormat. Jpeg); 
}

CodePudding user response:

Where a great god QWQ

CodePudding user response:

Such a big BBS didn't understand

CodePudding user response:

GG...

CodePudding user response:

Private void button1_Click (object sender, EventArgs e)
{
Graphics g=this. CreateGraphics ();
The Size s=this. Size;
Bitmap image=new Bitmap (s. idth and Sheldon horowitz eight, g);
Graphics g2=Graphics. FromImage (image);
G2. CopyFromScreen (enclosing the Location X, enclosing the Location. The Y, 0, 0, s);
G2. DrawImage (image, 0, 0).
Image. The Save (a. "pg");
}

CodePudding user response:

The

reference 4 floor myheadachecase reply:

private void button1_Click (object sender, EventArgs e)
{
Graphics g=this. CreateGraphics ();
The Size s=this. Size;
Bitmap image=new Bitmap (s. idth and Sheldon horowitz eight, g);
Graphics g2=Graphics. FromImage (image);
G2. CopyFromScreen (enclosing the Location X, enclosing the Location. The Y, 0, 0, s);
G2. DrawImage (image, 0, 0).
Image. The Save (a. "pg");
}

I need to control in the case of invisible web page for screenshots, this implementation

CodePudding user response:

reference 5 floor qq_36434521 reply:

I need to control in the case of invisible web page for screenshots, this implementation of

Ok, out after notification,

CodePudding user response:

Try the Visible=true mentioned in front, other screenshots method is to use a click event debugging is better

CodePudding user response:

To be honest, cefsharp is not allow you to capture, cut yarn,

CodePudding user response:

reference 5 floor qq_36434521 reply:

Quote: refer to 4th floor myheadachecase response:

Private void button1_Click (object sender, EventArgs e)
{
Graphics g=this. CreateGraphics ();
The Size s=this. Size;
Bitmap image=new Bitmap (s. idth and Sheldon horowitz eight, g);
Graphics g2=Graphics. FromImage (image);
G2. CopyFromScreen (enclosing the Location X, enclosing the Location. The Y, 0, 0, s);
G2. DrawImage (image, 0, 0).
Image. The Save (a. "pg");
}

I need to control in the case of invisible web page for screenshots, this implementation of

Failed to understand, control is not visible? The control is not visible? Is a browser control is not visible? Invisible how screenshot?

CodePudding user response:

Turn the webBrowser picture

 
The class NativeMethods 
{
[ComImport] 
[Guid (" 0000010 - d - 0000-0000 - C000-000000000046 ")] 
[InterfaceType (ComInterfaceType. InterfaceIsIUnknown)] 
Interface IViewObject 
{
Void the Draw ([MarshalAs (UnmanagedType. U4)] uint dwAspect, int lindex, IntPtr pvAspect, [In] IntPtr PTD, IntPtr hdcTargetDev, IntPtr hdcDraw, [MarshalAs (UnmanagedType. Struct)] ref the RECT lprcBounds, [In] IntPtr lprcWBounds, IntPtr pfnContinue, [MarshalAs (UnmanagedType. U4)] uint dwContinue); 
} 

[StructLayout (LayoutKind. Sequential, Pack=4)] 
Struct the RECT 
{
Public int Left; 
Public int Top; 
Public int Right; 
Public int Bottom; 
} 

Public static void GetImage (object obj, Image destination, Color backgroundColor) 
{
Using (Graphics Graphics=Graphics. FromImage (destination)) 
{
IntPtr deviceContextHandle=IntPtr. Zero; 
The RECT rectangle=new the RECT (); 

A rectangle. Right=destination. Width; 
A rectangle. The Bottom=destination. Height; 

Graphics. Clear (backgroundColor); 

Try 
{
DeviceContextHandle=graphics. GetHdc (); 

IViewObject viewObject=obj as IViewObject; 
ViewObject. The Draw (1, 1, IntPtr. Zero, IntPtr. Zero, IntPtr. Zero, deviceContextHandle, ref rectangle, IntPtr. Zero, IntPtr. Zero, 0). 
} 
The finally 
{
If (deviceContextHandle!=IntPtr. Zero) 
{
Graphics. ReleaseHdc (deviceContextHandle); 
} 
} 
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