启动任务栏上最大化的外部应用程序（全屏）

Question

How can i start external application in "fullscreen" mode (without borders and over taskbar)? And is it possible to do this using only .Net Framework library? Thanks for help.

Answer 1

try to use next

this.FormBorderStyle = FormBorderStyle.None;
this.WindowState = FormWindowState.Maximized;
this.Bounds = Screen.PrimaryScreen.Bounds;
this.TopMost = true;

in case of PInvoke try this code

public static IntPtr HWND_TOPMOST = (IntPtr)(-1);
public const int SWP_SHOWWINDOW = 0x0040;

[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter,int x,int y,int cx,int cy, UInt32 uFlags);

And call this

 IntPtr handle = this.Handle // or Handle to another window
 SetWindowPos(handle, HWND_TOPMOST, 0, 0, Screen.PrimaryScreen.Bounds.Right,
                    Screen.PrimaryScreen.Bounds.Bottom, SWP_SHOWWINDOW);

Answer 2

As Raymond Chen suggests , the best way to create a fullscreen window that covers up the taskbar is simply by creating a fullscreen window without a border.

Since your question is tagged C++, I'll assume you can translate this code into its .NET equivalent:

HWND CreateFullscreenWindow(HWND hwnd)
{
    HMONITOR hmon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
    MONITORINFO mi = { sizeof(mi) };

    if (!GetMonitorInfo(hmon, &mi)) return NULL;

    return CreateWindow(TEXT("static"),
                        TEXT("something interesting might go here"),
                        WS_POPUP | WS_VISIBLE,
                        mi.rcMonitor.left,
                        mi.rcMonitor.top,
                        mi.rcMonitor.right - mi.rcMonitor.left,
                        mi.rcMonitor.bottom - mi.rcMonitor.top,
                        hwnd, NULL, g_hinst, 0);
}