windows下简单的调用Setforegroundwindow并不能将窗口置最前，三种方法可以实现该功能。
1、先置topmost，然后取消
SetWindowPos(HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
SetWindowPos(HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
2、改变系统环境参数
这些定义winuser.h里都有的
#define SPI_GETFOREGROUNDLOCKTIMEOUT 0x2000
#define SPI_SETFOREGROUNDLOCKTIMEOUT 0x2001
#define SPIF_UPDATEINIFILE 0x0001
#define SPIF_SENDWININICHANGE 0x0002
先设置环境变量
DWORD lockTime ＝ 0;
SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT, 0, &lockTime, 0);
SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0, 0,
SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);
退出程序时还原环境变量
SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0, lockTime,
SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);
3、AllowSetForegroundWindow
HMODULE hModule = NULL;
ASFW_PTR pProcAddress = NULL;
hModule = GetModuleHandle("User32");
if (hModule != NULL)
pProcAddress = (ASFW_PTR)GetProcAddress(hModule, "AllowSetForegroundWindow");
if (pProcAddress != NULL)
{
nResult = (*pProcAddress)(-1);
if (nResult == FALSE )
MessageBox(NULL, "Could not set foreground permission", NULL, MB_OK | MB_ICONERROR);
}
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