Making a window full screen keeping aspect ratio

asked 2012-07-20 18:59:12 -0600

Tsuyoshi
31 ●1 ●1 ●3

updated 2012-07-25 02:39:34 -0600

Kirill Kornyakov

2792 ●13 ●25 ●52

I am trying to make a window full screen keeping its aspect ratio by the following code:

  cvNamedWindow(win_title, CV_WINDOW_NORMAL);
  cvSetWindowProperty(win_title, CV_WND_PROP_FULLSCREEN, CV_WINDOW_FULLSCREEN);
  cvSetWindowProperty(win_title, CV_WND_PROP_ASPECTRATIO, CV_WINDOW_KEEPRATIO);

but it does not keep the aspect ratio when it comes to full screen. Full-screen succeeded but keeping aspect ratio did not work. Any suggestions? (using opencv 2.4.2 windows binary distribution on Windows 7)

answered 2012-07-23 04:48:05 -0600

XCoder

158 ●9

I'm not sure if this will work and I don't have Qt compiled at this moment but try something like this:

cvNamedWindow( win_title, CV_WINDOW_AUTOSIZE | CV_WINDOW_KEEPRATIO );

Without Qt, when I maximized the window, the image kept it's size and aspect ratio.

Check these two documentation about windows:

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It does not seem to come to full screen as far as CV_WINDOW_AUTOSIZE is set. Thanks anyway. Actually, I made the aspect ratio of my image by adding black margin to its sides, and it's working now without any help by the property things mentioned above.

Tsuyoshi ( 2012-07-24 20:50:49 -0600 )edit

hi tsuyoshi, can you post your solution ?

refuzee ( 2013-09-17 06:12:23 -0600 )edit

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