[英]Change Screen Resolution
I've got a problem.我有问题。 I need to change screen resolution inside of my QT Project(like in some games for example).
我需要在我的 QT 项目中更改屏幕分辨率(例如在某些游戏中)。 I have heard that I need to use Windows API, like following:
我听说我需要使用 Windows API,如下所示:
DEVMODE devmode;
devmode.dmPelsWidth = 1024;
devmode.dmPelsHeight = 768;
devmode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
devmode.dmSize = sizeof(DEVMODE);
long result = ChangeDisplaySettings(&devmode, 0);
qDebug() << "RESULT OF CHANGE DISPLAY :"<< result;
But Qt says: "'DEVMODE': undeclared identifier".但是 Qt 说:“'DEVMODE':未声明的标识符”。 How can I fix it?
我该如何解决? Maybe I need to include some libraries?
也许我需要包括一些图书馆?
You have to include windows.h header.您必须包含 windows.h 标头。 Here is an working example.
这是一个工作示例。
#include <stdio.h>
#include <windows.h>
#include <winuser.h>
int main() {
DEVMODE devmode;
devmode.dmPelsWidth = 1024;
devmode.dmPelsHeight = 768;
devmode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
devmode.dmSize = sizeof(DEVMODE);
long result = ChangeDisplaySettings(&devmode, 0);
return 0;
}
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