wxWidgets Discussion Forum

The api that I invoke returns a date in this similar format "2020-04-17T09:30:00-04:00" and I would like to put that into a unix/epoch form (in my time zone)

Hello doublemax, You have helped me so much over the years and I thank you! The api returns the data "2020-04-17T09:30:00-04:00" but i could strip the extra : out of what it returns (I didnt write the api, I only invoke/consume) I will be the first to admit, I have alot to learn when its comes to EP...

This value is returned from the api "2020-04-17T09:30:00-04:00" which is EST time zone and I need to convert it to CST but I am unsure really how to do this with built in functions of C++ and/or wxwidgets There is some weird timezone / daylight savings time calculations that apparently makes it 1 ho...

Hello I realize this is not wxWidgets specific but it is C++ and you guys are a lot smarter then I am. I have the following date that I am consuming from an api. string sToParse = "2020-04-17T09:30:00-04:00"; which should be in human form "Friday, April 17, 2020 08:30:00" central time or epoch of 15...

also that resolution is the equivalent of 16 (4x4) 1920x1080 monitors so I am concerned with refresh performance

its basically the stock market. I dont really have a frame rate but will need to 'redraw' or update regions of the screen as they come in. Updates could be as fast as 2x a second. It will just be a passive display.

Hello, I am working on designing an application that has a resolution of 7680x4320 (its 4 - 4k monitors put together) in a linux environment. The monitors will display very small 8pt font letters and have historical graph information. What is the best graphics library to use for this? I doubt having...

Thank you so much for the example.

That works. Thanks again for helping me. I really appreciate it

Thank you for the reply. GetPixels is returning false

I am not sure how to get the RGB of a X,Y pixel of a wxNativePixelData. Do you know how I would do this?


wxNativePixelData npd(m_bmpSelectedWord);
npd.GetPixels() // unsure how this works or if it is even right

Hello, I recently updated my system (linux) and now wxMemoryDC::getPixel(x, y, wxColour) is returning null. I basically need to check and see if all the verticle pixels of an image are white. wxColour col; wxMemoryDC dc(m_bmpSelectedImg); for(int j = 0; j < m_bmpSelectedImg.GetHeight(); j++) { dc.Ge...

Does it draw a line on yours? When I try it on mine it doesnt draw the red line.

build 2017-09-30, 18:21:54 wx3.0.3 (Linux, unicode) 64 bit

I tried that code but the line is still on top of the text instead of underneath

Thanks. I think I am getting closer. This code creates this but it is not drawing the red line for some reason. (the background is transparent) TestOutput.png wxBitmap bmp(463, 105, 32); bmp.LoadFile("Input.png"); wxMemoryDC memDC(bmp); memDC.SetBackground(*wxTRANSPARENT_BRUSH); memDC.SetBackgroundM...

Thank you for the reply. I thought I was doing that? Maybe LoadFile clears the mask out? wxBitmap bmp(463, 105, 32); wxMask *pmask = new wxMask(bmp, wxColour(255, 255, 255)); bmp.SetMask(pmask); bmp.LoadFile("Input.png"); edit: I tried the DrawBitmap function after DrawLine but it still did not work...

Here is the enlarged version of the ouput


Actual Output:
Target Output: