VB/WinAPI/Graphics, API-Calls for Clipboard-Bitmap save to File

API-Calls for Clipboard-Bitmap save to File

Author	Message
Peter Zimmerman #1 / 7	API-Calls for Clipboard-Bitmap save to File Situation: The Clipboard contains a Screenshot of a form. Problem: How can I save it to disc?
Fri, 25 Jan 2002 03:00:00 GMT

Jim Deutc #2 / 7	API-Calls for Clipboard-Bitmap save to File In pure VB, paste it into a picturebox using GetData and use the SavePicture method to save it to disk. If you prefer to use API functions, it's quite a bit more complicated, but you can do the first part with OpenClipboard, GetClipboardData, and CloseClipboard, and the save with GetDIBits and binary file I/O (after adding your own BITMAPFILEHEADER to the data)... Jim Deutch MS Dev MVP Quote: >Situation: >The Clipboard contains a Screenshot of a form. >Problem: >How can I save it to disc?
Fri, 25 Jan 2002 03:00:00 GMT

Richard Maso #3 / 7	API-Calls for Clipboard-Bitmap save to File Quote: >Situation: >The Clipboard contains a Screenshot of a form. >Problem: >How can I save it to disc? Look at the current thread "Form Image to Graphics File" in comp.lang.basic.visual.misc -- Richard Mason
Fri, 25 Jan 2002 03:00:00 GMT

Peter Zimmerman #4 / 7	API-Calls for Clipboard-Bitmap save to File Thank you, Jim Deutch. The API-way works so far. What I need now are the parameters for BITMAPFILEHEADER that are responsible for the default Bitmap-resolutions.. In other words: Jim Deutch to Lu-Khon Mai (22.07.99) Quote: >I've got a routine here to save a picturebox as a monochrome bitmap: you >should find it pretty easy to change it for 16- and 256-color standard >palettes (if not, just ask more questions here!). Custom palettes are quite >a bit more work... So I ask for more... :-)
Sat, 26 Jan 2002 03:00:00 GMT

Peter Zimmerman #5 / 7	API-Calls for Clipboard-Bitmap save to File Hi Richard Mason! Can you give me more info? I searched comp.lang.basic.visual.misc and comp.lang.basic.misc but cannot find a thread named "Form Image to Graphics File" Is there a way to do a search by title? Or is something wrong? Or is it a user-problem? Thanks
Sat, 26 Jan 2002 03:00:00 GMT

Jim Deutc #6 / 7	API-Calls for Clipboard-Bitmap save to File Resolution is not controlled in any way by the BITMAPFILEHEADER. You have to coordinate the BITMAPINFO data (the .biBitsPixel member and the .bmiColors palette array of RGBQuads) along with the pixel bits themselves (eg, 8 Bits/Pixel means each byte represents a pixel as an index into the .bmiColors array, while monochrome (1 Bit/Pixel) means each byte represents eight pixels). What was it you wanted to do? Jim Deutch MS Dev MVP Quote: >Thank you, Jim Deutch. The API-way works so far. What I need now are the >parameters for BITMAPFILEHEADER that are responsible for the default >Bitmap-resolutions.. >In other words: >Jim Deutch to Lu-Khon Mai (22.07.99) >>I've got a routine here to save a picturebox as a monochrome bitmap: you >>should find it pretty easy to change it for 16- and 256-color standard >>palettes (if not, just ask more questions here!). Custom palettes are >quite >>a bit more work... >So I ask for more... :-)
Sat, 26 Jan 2002 03:00:00 GMT

Richard Maso #7 / 7	API-Calls for Clipboard-Bitmap save to File Quote: >Hi Richard Mason! >Can you give me more info? I searched >comp.lang.basic.visual.misc >and >comp.lang.basic.misc >but cannot find a thread named "Form Image to Graphics File" As posted by Mike Williams in c.l.b.v.misc (8th August) To simulate PrintScreen: Private Declare Sub keybd_event Lib "user32" _ (ByVal bVk As Byte, ByVal bScan As Byte, _ ByVal dwFlags As Long, ByVal dwExtraInfo As Long) Const VK_SNAPSHOT As Byte = &H2C Private Sub Command1_Click() Clipboard.Clear Call keybd_event(VK_SNAPSHOT, 0, 0, 0) DoEvents SavePicture Clipboard.GetData, "c:\mypic.bmp" End Sub -- Richard Mason
Sat, 26 Jan 2002 03:00:00 GMT

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