I would like to take a "screen capture" of just a Form.
I've done the following:
internal void CaptureScreen()
{
Graphics g1 = CreateGraphics( );
Image MyImage = new Bitmap(ClientRe ctangle.Width,
ClientRectangle .Height, g1);
Graphics g2 = Graphics.FromIm age(MyImage);
IntPtr dc1 = g1.GetHdc();
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, ClientRectangle .Width,
ClientRectangle .Height, dc1, 0, 0, 13369376);
g1.ReleaseHdc(d c1);
g2.ReleaseHdc(d c2);
MyImage.Save(@" Captured.jpg", ImageFormat.Jpe g);
}
[System.Runtime. InteropServices .DllImportAttri bute("gdi32.dll ")]
private static extern bool BitBlt(
IntPtr hdcDest, // handle to destination DC
int nXDest, // x-coord of destination upper-left corner
int nYDest, // y-coord of destination upper-left corner
int nWidth, // width of destination rectangle
int nHeight, // height of destination rectangle
IntPtr hdcSrc, // handle to source DC
int nXSrc, // x-coordinate of source upper-left corner
int nYSrc, // y-coordinate of source upper-left corner
Int32 dwRop // raster operation code
);
Two questions:
1) CaptureScreen() works but in "Captured.j pg" I see my Form that is
not completely loaded (I see parts of my desktop behind some controls).
Is there a way to know if a Form is completely loaded/rendered ?
2) Then I will have to do this capture automatically and maybe without
showing the form to the user ; is it possible?
Thanks in advance 1 4628
jcmag,
If you use .NET 2.0 try using DrawToBitmap method of the control class.
It will take care of all this PInvokes that you have in your code.
In .NET 2.0 Form fires Shown event after the form is fully painted first
time.
--
HTH
Stoitcho Goutsev (100)
"jcmag" <jc***@yahoo.co mwrote in message
news:11******** *************@3 8g2000cwa.googl egroups.com...
>I would like to take a "screen capture" of just a Form.
I've done the following:
internal void CaptureScreen()
{
Graphics g1 = CreateGraphics( );
Image MyImage = new Bitmap(ClientRe ctangle.Width,
ClientRectangle .Height, g1);
Graphics g2 = Graphics.FromIm age(MyImage);
IntPtr dc1 = g1.GetHdc();
IntPtr dc2 = g2.GetHdc();
BitBlt(dc2, 0, 0, ClientRectangle .Width,
ClientRectangle .Height, dc1, 0, 0, 13369376);
g1.ReleaseHdc(d c1);
g2.ReleaseHdc(d c2);
MyImage.Save(@" Captured.jpg", ImageFormat.Jpe g);
}
[System.Runtime. InteropServices .DllImportAttri bute("gdi32.dll ")]
private static extern bool BitBlt(
IntPtr hdcDest, // handle to destination DC
int nXDest, // x-coord of destination upper-left corner
int nYDest, // y-coord of destination upper-left corner
int nWidth, // width of destination rectangle
int nHeight, // height of destination rectangle
IntPtr hdcSrc, // handle to source DC
int nXSrc, // x-coordinate of source upper-left corner
int nYSrc, // y-coordinate of source upper-left corner
Int32 dwRop // raster operation code
);
Two questions:
1) CaptureScreen() works but in "Captured.j pg" I see my Form that is
not completely loaded (I see parts of my desktop behind some controls).
Is there a way to know if a Form is completely loaded/rendered ?
2) Then I will have to do this capture automatically and maybe without
showing the form to the user ; is it possible?
Thanks in advance This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Stan Shankman |
last post by:
C# -- Visual Studio.Net – Windows Application
Greetings all,
How do I copy a Form’s image to a bitmap? – And do so before it gets to the screen.
I haven’t been able to find anyone that knows how to do this - - all I want to do is copy a Form’s image to a bitmap. - - In effect,
I want to take a window-shot of a Form, (as opposed to a “screen-shot”) but it must be done before that Form hits the screen.
Anyone? Ideas?
|
by: Per |
last post by:
Hi all,
This may be a newbie question, but I can't find the answer anywhere.
I want to make a capture of the screen, or a part of the screen, that
contains the main portion of the form.
Detecting the screen that contain the main portion of the form is pretty
straight forward, but how do I capture what I need in an Image object?
Another thing, how do you make the program move the mouse pointer and
simulate clicks?
Best regards
|
by: TerryWilson |
last post by:
I am developing a web based service tool using asp.net that we will distribute with
our product. This service tool will be used for remotely configuring the product, problem
determination, etc. One thing that I would like to be able to do is display a screen
capture of our product running. I have the code to get the screen capture of the
desktop and I also know how to send the image back to the client to be displayed.
The problem is that...
|
by: kris_scheyer |
last post by:
Ok, here's what im trying to do:
I have a machine running XP embedded that has a webserver. I have a
button on the aspx web form that is supposed to capture the screen of
the computer hosting the webserver and display it on the browser.
Now I already have the code that captures the screen of the webserver
(using user32.dll and gdi32.dll) and when I run the web application on
the ASP.NET Development Server using visual web developer 2005...
|
by: Marcob |
last post by:
Is there any component out there to capture screen text from a specific
region on any active external application form.
Thanks
Marco
| |
by: Eddie Dunn |
last post by:
I have one here that I cannot find anything on in my searching.
I am implementing a screen capture functionality into my Visual Basic
..NET application.
The code I am using calls the bitblt function in gdi32.dll to achieve
its magic as follows:
Public Function CreateScreenshot() As Bitmap
|
by: Ian Ceicys |
last post by:
I’ve been tasked with doing documentation on the project I’ve recently
joined. Here’s what I’m looking for in terms of documentation. I want to
generate a diagram from a huge .net 1.1 Winforms application that relates
every form with the corresponding button/command that invokes that form. In
other words I want to output a diagram that traces the flow (workflow is the
right term?) of what happens when every single button/command is...
|
by: JP2006 |
last post by:
I'm trying to write a control that will take a screen capture of a
particular website when a user submits a form in a web application; one
of the form fields is for a URL - the control needs to get an image of
that web site so that it can be displayed later as a thumbnail image.
I have code for taking a normal screen capture using GDI+ which works
fine. What I am now trying to do is to modify it so the screen capture
is of a remote...
|
by: raylopez99 |
last post by:
Beware newbies: I spent a day before I figured this out: copying a
bitmap (image) file to file is not quite like copying a text file--you
have to do some tricks (see below), like using a "Graphics" object to
wrap around the image (!). It's not so simple as shown in most
examples (where they have a simple image file and hard copy it into a
harddrive along the lines of : image.Save(@"C:\\temp\\myimage.pgn");
That will work, but it's a...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
| |
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |