C++ Win32 fullscreen windows cause the taskbar, which is set to auto-hide, to not rise properly.

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C++ Win32 fullscreen windows cause the taskbar, which is set to auto-hide, to not rise properly.

RL Chen 250

When a window is displayed full screen (or takes up the whole screen), the taskbar can't be raised (the user has set the auto-hide taskbar option), I don't want this window to cause this problem, is it possible to set up this window in C++ so that the raising of the taskbar is not affected?

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Castorix31 90,686

If it is fullscreen, it is normal that the Taskbar cannot be activated.

Otherwise, you can reduce the size of 1 pixel to allow Taskbar activation (but it is not real fullscreen then...).

For example if the Taskbar is at bottom (its location should be checked first) :

MONITORINFO mi = { sizeof(mi) };
GetMonitorInfo(MonitorFromWindow(hWnd, MONITOR_DEFAULTTOPRIMARY), &mi);
SetWindowLong(hWnd, GWL_STYLE, GetWindowLong(hWnd, GWL_STYLE) & ~WS_OVERLAPPEDWINDOW);
SetWindowPos(hWnd, HWND_TOP, mi.rcMonitor.left, mi.rcMonitor.top, mi.rcMonitor.right - mi.rcMonitor.left,
				mi.rcMonitor.bottom - mi.rcMonitor.top - 1,
				SWP_NOOWNERZORDER | SWP_FRAMECHANGED);

RL Chen 250 Reputation points

2024-06-28T07:17:57.3+00:00

I don't understand this sentence: "Otherwise, you can reduce the size of 1 pixel to allow Taskbar activation.", do you mean to leave the bottom row of pixels with a height of 1 alone? (Assuming the user's taskbar is at the bottom) That's a good way to go. I'll test it later.
Castorix31 90,686 Reputation points

2024-06-28T11:26:35.57+00:00

Yes, I did a test by setting Taskbar to auto-hide like you said and with this code (R. Chen method for fullscreen, instead of other methods like ChangeDisplaySettings + CDS_FULLSCREEN), by resizing the window with just 1 pixel less than maximum height, the window seems full screen for the user but the Taskbar car still appear/disappear with mouse

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C++ Win32 fullscreen windows cause the taskbar, which is set to auto-hide, to not rise properly.

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