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Select Object(hdc Dest, h Bitmap) ' bitblt over GDI32. Save(filename, format) End Sub 'Capture Window To File '/ Captures a screen shot of the entire desktop, and saves it to a file Public Sub Capture Screen To File(By Val filename As String, By Val format As Image Format) Dim img As Image = Capture Screen() img. Pixel) Return bmp Crop End Function '/ Helper class containing Gdi32 API functions Private Class GDI32 Public SRCCOPY As Integer = &HCC0020 ' Bit Blt dw Rop parameter Declare Function Bit Blt Lib "gdi32.dll" ( _ By Val h Dest DC As Int Ptr, _ By Val x As Int32, _ By Val y As Int32, _ By Val n Width As Int32, _ By Val n Height As Int32, _ By Val h Src DC As Int Ptr, _ By Val x Src As Int32, _ By Val y Src As Int32, _ By Val dw Rop As Int32) As Int32 Declare Function Create Compatible Bitmap Lib "gdi32.dll" ( _ By Val hdc As Int Ptr, _ By Val n Width As Int32, _ By Val n Height As Int32) As Int Ptr Declare Function Create Compatible DC Lib "gdi32.dll" ( _ By Val hdc As Int Ptr) As Int Ptr Declare Function Delete DC Lib "gdi32.dll" ( _ By Val hdc As Int Ptr) As Int32 Declare Function Delete Object Lib "gdi32.dll" ( _ By Val h Object As Int Ptr) As Int32 Declare Function Select Object Lib "gdi32.dll" ( _ By Val hdc As Int Ptr, _ By Val h Object As Int Ptr) As Int Ptr End Class 'GDI32 '/ Helper class containing User32 API functions Public Class User32 _ Public Structure RECT Public left As Integer Public top As Integer Public right As Integer Public bottom As Integer End Structure 'RECT Declare Function Get Desktop Window Lib "user32.dll" () As Int Ptr Declare Function Get Window DC Lib "user32.dll" ( _ By Val hwnd As Int Ptr) As Int Ptr Declare Function Release DC Lib "user32.dll" ( _ By Val hwnd As Int Ptr, _ By Val hdc As Int Ptr) As Int32 Declare Function Get Window Rect Lib "user32.dll" ( _ By Val hwnd As Int Ptr, _ By Ref lp Rect As RECT) As Int32 End Class 'User32 End Class 'Screen Capture You must add the class file to your solution explorer. You can either right click your project in solution explorer or you can use the add item menu item. my quest is can i get this process done by code Please help me thanks in advance sansharam Using this screencapture class win winxp, and it does what i want. However on Windows 7 pc's (32 or 64 bit) - i get black image... Just to add: the app i am making is SERVICE BASED & currently it works on Win XP, when installed on Win7, just black image.

Create Compatible Bitmap(hdc Src, width, height) ' select the bitmap object Dim h Old As Int Ptr = GDI32. Delete Object(h Bitmap) Return img End Function 'Capture Window '/ Captures a screen shot of a specific window, and saves it to a file Public Sub Capture Window To File(By Val handle As Int Ptr, By Val filename As String, By Val format As Image Format) Dim img As Image = Capture Window(handle) img. by right click i can copy that and past that in to a text file.....

Capture Screen) Dim bmp Crop As New Bitmap(Cap Rect Width, Cap Rect Height, bmp Image. Grrr been googling for 2 weeks on this issue, and all i can find is that some people have the same problem, and that windows 7 gdi/win32 api has changed a great deal since introduction of VISTA and onwards, windows 7.

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Capture Screen 'captures entire desktop straight to file SC.

Bit Blt(hdc Dest, 0, 0, width, height, hdc Src, 0, 0, SRCCOPY) ' restore selection GDI32.

Get Window List() Dim screenshotname As String screenshotname = grp Info. Capture Window To File(Direct Cast(window List(lst Game. Find Window Ex(b2, vb Null String, "Sys List View32", vb Null String) Return Capture Window(b2) _ Public Shared Function Find Window(By Val class Name As String, By Val caption As String) As Int Ptr End Function I'm pretty sure this behavior is consistent across all versions of Windows but I've only tested this in XP. but its showing some error and the form was not loading:-( First you must add the class file to your project in the solution explorer. Desktop & "\my Form Image.png" Try Dim img As Image = SCapture.

Get Desktop Window() API call will return the handle only for the primary video display, not the entire screen output.... Find Window Ex(base, vb Null String, "SHELLDLL_Def View", vb Null String) b2 = User32. coz i have created a new form and pasted the cod ein designer..

every time i use the class to take a screenshot, it filles my RAM with 6 extra megabytes (and it takes approx. So after aboute 1 minute, it uses approx 700 MB RAM : S: S.. Then I assume its something in your code that is not being disposed of properly, whatever you are doing in it. I tested EZScreen Cap, which uses the class, and after taking a few snapshots, the memory increased by about 10-20 megabytes after taking a few quick snapshots in rapid succession, but after a short time, it goes back down to about where it was before (a little higher just because of the extra graphics that it has to display in the listview), after the garbage collector does its job and cleans up... Screen Capture 'grabs image of object handle (in this case, the form) Dim My Window As Image = SC.

If you want to get help with your code, then feel free to post it, but please create a new thread in the regular VB. Capture Window(Me.handle) 'grabs image of entire desktop Dim My Desktop As Image = SC. Jpeg) 'returns bitmap of region of desktop by passing in a rectangle Dim My Bit Map As Bitmap = SC. gigemboy, Thanks for the code it is exacually what I have been looking for, however I am having a really hard time trying to create the code to allow the user to specify a region using mouse clicks. Its just a transparent panel on a form, and it gets the bounds of panel when you capture it (after first hiding the form so it doesnt capture the form). I noticed in your EZScreen Cap you have this ability and I was wondering if you would be able to help with the code that you used to acheive this. The last code above describes it, although in the example it uses the form bounds. This is cool stuff you've passed along and it saved me some time for sure. I have lots of monitors and was getting nowhere trying to get a screenshot of all of them at the same time. so this code will only take a screenshot of ONE monitor as is. Get Desktop Window() I found the REAL Window that represents the desktop and modified your code so it will work across ALL screens. Find Window("Progman", "Program Manager") Dim b2 As Int Ptr = User32. Jpeg)A , DCSE, e-Biz , i-Net , MCDST, MCP, Network , Security , A. NET Calendar Control | Useful Win Form Controls | Regular Expression (Regex) Library | Backup/Restore SQL Server 2005 Database using code | Verify SQL Server 2005 database backup using SMO | Backup SQL Server 2005 database using SMO | Restore SQL Server 2005 database using SMO | Use Fx Cop from Microsoft to aid with code optimization To the original poster: THANKS! Here is a class that contains very easy methods to get screen captures.

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