hello, i want to analyze the actual screen output from a program, this means i need a pixmap-array from the actual windows screen. at the time i solve the problem by using a captureprogram, wich saves the actual screen to a bmp-file, then i read it again in labview. this solution is very slow and instable and has high disk load wich is not necessary. i want to grab the screen directly from windows or simulate a pressing print key (works) and read from the clipboard (my problem). in nidevzone i found a example for labwindows, that allows to read a image from clipboard into an array, but nothing for labview. and there is a IMAQ ClipboardToImage function in the labview help, but i cant find the function. what to do? thx for help
The example from LabWindows may be the answer you need, if this uses WinAPI calls.
This is actually a question for a Microsoft forum. If you can find out how to get the screen capture through WinAPI, you can import the function (usually a DLL) into LabVIEW, and then bring in the bitmap that way.
I did that. See attached demo. Actually, I've something even better. Capture part of the screen which you want to analyze, and return with flattened pixmap data directly without go through clipboard.
GREAT! thank you very much, mr. zou. could you also give me the example how to capture without clipboard? its the best because direct way. thx again 🙂
"zou" schrieb im Newsbeitrag news:506500000005000000F69A0000-1027480788000@exchange.ni.com... > I did that. See attached demo. > Actually, I've something even better. > Capture part of the screen which you want > to analyze, and return with flattened > pixmap data directly without go through clipboard. > > George Zou > http://gtoolbox.yeah.net
Excelent, that code even works in LV2009. Though I found that it does grab whatever is in the clipboard if you hit the print screen button, which is what I was looking to do.
I need to get a window screenprint in jpg compresssed data(not saved as a jpg on HD, just the data, maybe string od U8-array) or just as an Image, i can do compression on my own...
