windows 使用 WinAPI 进行全屏管理
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Fullscreen management with WinAPI
提问by Xavier V.
How to well use the WinAPI to manage the fullscreen mode on windows's window ?
如何很好地使用 WinAPI 来管理 windows 窗口的全屏模式？
Here is my problem :
这是我的问题：
I have an application which has to be fullscreen.
I use ChangeDisplaySettings() function (winuser.h) with the CDS_FULLSCREEN value to put my window to fullscreen mode when receiving a WM_ACTIVATEwith (wParam == WA_ACTIVE || wParam == WA_CLICKACTIVE):
我有一个必须是全屏的应用程序。我使用 ChangeDisplaySettings() 函数 (winuser.h) 和 CDS_FULLSCREEN 值在收到WM_ACTIVATEwith时将我的窗口置于全屏模式(wParam == WA_ACTIVE || wParam == WA_CLICKACTIVE)：
DEVMODE dmScreenSettings;
memset (&dmScreenSettings, 0, sizeof (dmScreenSettings));
dmScreenSettings.dmSize = sizeof (dmScreenSettings);
dmScreenSettings.dmPelsWidth = 1280;
dmScreenSettings.dmPelsHeight = 720;
dmScreenSettings.dmBitsPerPel = 32;
dmScreenSettings.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN);
I use the same function with the CDS_RESET value to put it back in "normal" mode when receiving a WM_ACTIVATEwith (wParam == WA_INACTIVE):
我使用与 CDS_RESET 值相同的函数在收到WM_ACTIVATEwith时将其恢复为“正常”模式(wParam == WA_INACTIVE)：
ChangeDisplaySettings(&dmScreenSettings, CDS_RESET);
When I first launch my application, it is in fullscreen. I use ALT+TAB to switch to another application on my computer. My application minimized itself. It works well. Then, I switch back to my application, and it comes up in fullscreen mode. Again, it works well. But if I want to switch back to another application one more time, my application statys in fullscreen mode, hiding all others applications on my computer.
当我第一次启动我的应用程序时，它是全屏的。我使用 ALT+TAB 切换到我计算机上的另一个应用程序。我的应用程序将自身最小化。它运作良好。然后，我切换回我的应用程序，它以全屏模式出现。再次，它运作良好。但是如果我想再次切换回另一个应用程序，我的应用程序将处于全屏模式，隐藏我计算机上的所有其他应用程序。
NB : My window is created using CreateWindowEx() function with the following parameters :
注意：我的窗口是使用 CreateWindowEx() 函数创建的，参数如下：
DWORD dwExStyle = WS_EX_TOPMOST;
DWORD dwStyle = WS_VISIBLE | WS_POPUP;
1) Is there another way than using ChangeDisplaySettings() to change the fullscreen mode ?
1) 除了使用 ChangeDisplaySettings() 更改全屏模式之外，还有其他方法吗？
2) Am I using it the good values ?
2）我使用它的好价值吗？
3) Is there anything to do that I forgot ?
3) 有什么事情我忘记了吗？
Thanks in advance for all your answers. Best regards,
预先感谢您的所有回答。此致，
回答by JustBoo
These guys seemto cover all the options.
这些家伙似乎涵盖了所有选项。
Win32: full-screen and hiding taskbar
New Edit:Based on a new comment, try this.
新编辑：根据新评论，试试这个。
Trap the WM_ACTIVATEevent in you app for that window. In that event call the GetWindowPlacement Functionand hopefully you'll be on your way. Note the link to "SetWindowPlacement" at the bottom.
在您的应用程序中为该窗口捕获WM_ACTIVATE事件。在这种情况下，调用GetWindowPlacement 函数，希望您能顺利完成。请注意底部的“SetWindowPlacement”链接。
回答by Adrian McCarthy
Try it without WS_EX_TOPMOST.
没有WS_EX_TOPMOST.
Whenever you're activated, you'll become the foreground window automatically.
每当您被激活时，您将自动成为前台窗口。
回答by Chris Becke
If you are a Kiosk application, then the screen is already configured to the ideal / correct resolution.
If you are not a Kiosk application, then you have no business f*****g with the users resolution. Instead: GetSystemMetrics to get the size of the default display, and create your borderless window exactly that large. The taskbar will automatically hide and your app will be "full screen".
如果您是 Kiosk 应用程序，则屏幕已配置为理想/正确的分辨率。
如果您不是 Kiosk 应用程序，那么您与用户分辨率无关。取而代之的是：GetSystemMetrics 获取默认显示的大小，并创建完全一样大的无边框窗口。任务栏将自动隐藏，您的应用程序将“全屏”显示。
Especially now that LCD panels are popular, the display resolution must match the panel resolution in order for sub pixel anti aliasing to work - ala ClearType. It is your applications responsibility to draw correctly at the display resolution, not the other way around.
尤其是现在 LCD 面板很流行，显示分辨率必须与面板分辨率匹配才能使亚像素抗锯齿工作 - ala ClearType。您的应用程序有责任以显示分辨率正确绘制，而不是相反。
