C++ 是否有信用证++;用于在XP和x27之间切换的多监视器库;dualview或clone的桌面设置?
我正在编写一个应用程序,它将有助于自动切换之间有WindowsXP的桌面在dualview或克隆。该应用程序为GUI使用一个小的wxWidgets窗口。如果GUI中有一个按钮,可以方便地在dualview和Clone之间切换,那就太好了 是否有一个c/c++库可以访问控制dualview或克隆?检查一下,据我所知,应该启用或禁用multiview。虽然它是用脚本语言编写的,但它确实利用了普通的WinAPI函数,因此您应该能够通过查看它们来了解发生了什么 据我所知,禁用第二个监视器似乎是通过调用第二个监视器并提供宽度、高度、颜色深度和0的刷新率来完成的。要重新启用它,可以使用有效参数再次调用ChangeDisplaySettingsExC++ 是否有信用证++;用于在XP和x27之间切换的多监视器库;dualview或clone的桌面设置?,c++,c,windows,desktop,multiple-monitors,C++,C,Windows,Desktop,Multiple Monitors,我正在编写一个应用程序,它将有助于自动切换之间有WindowsXP的桌面在dualview或克隆。该应用程序为GUI使用一个小的wxWidgets窗口。如果GUI中有一个按钮,可以方便地在dualview和Clone之间切换,那就太好了 是否有一个c/c++库可以访问控制dualview或克隆?检查一下,据我所知,应该启用或禁用multiview。虽然它是用脚本语言编写的,但它确实利用了普通的WinAPI函数,因此您应该能够通过查看它们来了解发生了什么 据我所知,禁用第二个监视器似乎是通过调用第
无论如何,最好尝试一下脚本(解释器在主页上免费提供),看看它是否实现了您想要的功能(注意,脚本是为两个特定的监视器硬编码的,您必须用监视器的名称替换它们才能使其工作).以下代码是一种工作方式。它不能保持监视器的分辨率
void AppFrame::OnButtonModify(wxCommandEvent& event)
{
static bool bSwitch = false;
if (bSwitch)
{
ExtendExternalDisplay();
}
else
{
CloneExternalDisplay();
}
bSwitch = !bSwitch;
}
void AppFrame::ExtendExternalDisplay()
{
int nModeSwitch = NULL;
DEVMODE dmPrimary, dmSecondary, dmThird, savedmSecondary;
#define szPrimaryDisplay TEXT( "\\\\.\\DISPLAY1" )
#define szSecondaryDisplay TEXT( "\\\\.\\DISPLAY2" )
#define szThirdDisplay TEXT( "\\\\.\\DISPLAY3" )
ZeroMemory( &dmPrimary, sizeof(dmPrimary) );
dmPrimary.dmSize = sizeof(dmPrimary);
ZeroMemory( &dmSecondary, sizeof(dmSecondary) );
dmSecondary.dmSize = sizeof(dmSecondary);
ZeroMemory( &dmThird, sizeof(dmThird) );
dmThird.dmSize = sizeof(dmThird);
ZeroMemory( &dmThird, sizeof(dmThird) );
dmThird.dmSize = sizeof(dmThird);
BOOL result;
HDC handle;
DWORD iDevNum = 0;
DWORD dwFlags = 0;
DISPLAY_DEVICE lpDisplayDevice, lpDisplayDeviceOne, lpDisplayDeviceTwo;
ZeroMemory(&lpDisplayDevice, sizeof(lpDisplayDevice));
ZeroMemory(&lpDisplayDeviceOne, sizeof(lpDisplayDeviceOne));
ZeroMemory(&lpDisplayDeviceTwo, sizeof(lpDisplayDeviceTwo));
lpDisplayDevice.cb = sizeof(lpDisplayDevice);
lpDisplayDeviceOne.cb = sizeof(lpDisplayDeviceOne);
lpDisplayDeviceTwo.cb = sizeof(lpDisplayDeviceTwo);
// All this does is confirm the number of display devices the graphics board is capable of handling
while(EnumDisplayDevices(NULL, iDevNum, &lpDisplayDevice, dwFlags))
{
if (iDevNum == 0)
{
lpDisplayDeviceOne = lpDisplayDevice;
TRACE("DeviceName: '%s'\n", lpDisplayDeviceOne.DeviceName);
TRACE("DeviceString: '%s'\n", lpDisplayDeviceOne.DeviceString);
TRACE("Flags: %08X %s%s\n", lpDisplayDeviceOne.StateFlags,((lpDisplayDeviceOne.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP) ? "Desktop " : ""), ((lpDisplayDeviceOne.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) ? "Primary" : ""));
}
if (iDevNum == 1)
{
lpDisplayDeviceTwo = lpDisplayDevice;
TRACE("DeviceName: '%s'\n", lpDisplayDeviceTwo.DeviceName);
TRACE("DeviceString: '%s'\n", lpDisplayDeviceTwo.DeviceString);
TRACE("Flags: %08X %s%s\n", lpDisplayDeviceTwo.StateFlags,((lpDisplayDeviceTwo.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP) ? "Desktop " : ""), ((lpDisplayDeviceTwo.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) ? "Primary" : ""));
}
iDevNum ++;
}
// load DISPLAY1 monitor information // ENUM_CURRENT_SETTINGS
if (!EnumDisplaySettings(szPrimaryDisplay, ENUM_REGISTRY_SETTINGS, (DEVMODE*)&dmPrimary))
{
TRACE("EnumDisplaySettings unable to enumerate primary display\n");
return;
}
if (!EnumDisplaySettings(szSecondaryDisplay, ENUM_REGISTRY_SETTINGS, (DEVMODE*)&dmSecondary))
TRACE("EnumDisplaySettings unable to enumerate secondary display display\n");
// these don't enumerate in clone mode
if (!EnumDisplaySettings(szSecondaryDisplay, ENUM_CURRENT_SETTINGS, (DEVMODE*)&savedmSecondary))
TRACE("EnumDisplaySettings unable to enumerate secondary display using ENUM_CURRENT_SETTINGS settings\n");
// disable a display, doesn't work
// nModeSwitch = ChangeDisplaySettingsEx (szSecondaryDisplay, NULL, NULL, NULL, NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
dmPrimary.dmFields = DM_POSITION;
dmPrimary.dmPosition.x = 0; // set DISPLAY1 as the primary display
dmPrimary.dmPosition.y = 0; // set DISPLAY1 as the primary display
// set DISPLAY1 as primary display (dmPosition.x = 0)
nModeSwitch = ChangeDisplaySettingsEx (szPrimaryDisplay, (DEVMODE*)&dmPrimary, NULL, (CDS_UPDATEREGISTRY | CDS_NORESET), NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
// despite the other lines of code this next line is neccesary to wake the video projector
dmSecondary = dmPrimary;
dmSecondary.dmFields = DM_POSITION | DM_PELSWIDTH | DM_PELSHEIGHT;
dmSecondary.dmPosition.x = dmPrimary.dmPelsWidth + 1;
dmSecondary.dmPosition.y = 0;
dmSecondary.dmPelsWidth = dmPrimary.dmPelsWidth; // resize the primary display to match the secondary display
dmSecondary.dmPelsHeight = dmPrimary.dmPelsHeight; // resize the primary display to match the secondary display
nModeSwitch = ChangeDisplaySettingsEx (szSecondaryDisplay, (DEVMODE*)&dmSecondary, NULL, (CDS_UPDATEREGISTRY | CDS_NORESET), NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
// load DISPLAY3 monitor information
if (!EnumDisplaySettings(szThirdDisplay, ENUM_CURRENT_SETTINGS, (DEVMODE*)&dmThird))
{
TRACE("EnumDisplaySettings unable to enumerate third display display\n");
}
else
{
dmThird.dmPelsWidth = dmSecondary.dmPelsWidth; // resize the primary display to match the secondary display
dmThird.dmPelsHeight = dmSecondary.dmPelsHeight; // resize the primary display to match the secondary display
dmThird.dmPosition.x = -dmThird.dmPelsWidth; // set DISPLAY3 as the third display
dmPrimary.dmPosition.y = 0; // set DISPLAY1 as the third display
// set DISPLAY3 as third display (-dmThird.dmPelsWidth)
nModeSwitch = ChangeDisplaySettingsEx (szThirdDisplay, (DEVMODE*)&dmThird, NULL, (CDS_UPDATEREGISTRY | CDS_NORESET), NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
}
// really important line makes the whole thing happen
nModeSwitch = ChangeDisplaySettingsEx (NULL, NULL, NULL, 0, NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
}
void AppFrame::CloneExternalDisplay()
{
int nModeSwitch = NULL;
DEVMODE dmPrimary, dmSecondary, dmThird;
#define szPrimaryDisplay TEXT( "\\\\.\\DISPLAY1" )
#define szSecondaryDisplay TEXT( "\\\\.\\DISPLAY2" )
#define szThirdDisplay TEXT( "\\\\.\\DISPLAY3" )
ZeroMemory( &dmPrimary, sizeof(dmPrimary) );
dmPrimary.dmSize = sizeof(dmPrimary);
ZeroMemory( &dmSecondary, sizeof(dmSecondary) );
dmSecondary.dmSize = sizeof(dmSecondary);
ZeroMemory( &dmThird, sizeof(dmThird) );
// load DISPLAY1 monitor information
if (!EnumDisplaySettings(szPrimaryDisplay, ENUM_CURRENT_SETTINGS, (DEVMODE*)&dmPrimary))
{
TRACE("EnumDisplaySettings unable to enumerate primary display\n");
return;
}
if (!EnumDisplaySettingsEx(szSecondaryDisplay, ENUM_REGISTRY_SETTINGS, (DEVMODE*)&dmSecondary, 0))
TRACE("EnumDisplaySettings unable to enumerate secondary display display\n");
dmPrimary.dmFields = DM_POSITION;
dmPrimary.dmPosition.x = 0; // set DISPLAY1 as the primary display
dmPrimary.dmPosition.y = 0; // set DISPLAY1 as the primary display
// set DISPLAY1 as primary display (dmPosition.x = 0)
nModeSwitch = ChangeDisplaySettingsEx (szPrimaryDisplay, (DEVMODE*)&dmPrimary, NULL, (CDS_UPDATEREGISTRY | CDS_NORESET), NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
// this should disable display
dmSecondary.dmFields = DM_PELSWIDTH|DM_PELSHEIGHT;
dmSecondary.dmPelsWidth = 0; //dmPrimary.dmPelsWidth; // resize the primary display to match the secondary display
dmSecondary.dmPelsHeight = 0;//dmPrimary.dmPelsHeight; // resize the primary display to match the secondary display
// this should clone the display
dmSecondary.dmFields |= DM_POSITION;
dmSecondary.dmPosition.x = 0; // set DISPLAY1 as the primary display
dmSecondary.dmPosition.y = 0; // set DISPLAY1 as the primary display
nModeSwitch = ChangeDisplaySettingsEx (szSecondaryDisplay, (DEVMODE*)&dmSecondary, NULL, (CDS_UPDATEREGISTRY | CDS_NORESET), NULL);
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
nModeSwitch = ChangeDisplaySettingsEx (NULL, NULL, NULL, 0, NULL); // set DISPLAY1 as the primary display
// CDdx::ErrorDisplayDevice(nModeSwitch); // test and TRACE result
}
我应该说,完全有可能是我误解了它,这实际上并没有启用/禁用multiview,所以我说检查一下很好(我会自己检查,但没有多监视器设置)。但是,如果这不起作用,我不确定会发生什么——我所看到的关于multiview online的其他事情只与驱动程序有关(而不是应用程序本身)