i know how suppress animations when calling hwnd showwindow() method. here code:
[dllimport("user32.dll")] [return: marshalas(unmanagedtype.bool)] static extern bool showwindow(intptr hwnd, showwindowcommands ncmdshow); public enum showwindowcommands { hide = 0, shownormal = 1, showminimized = 2, maximize = 3, shownoactivate = 4, show = 5, minimize = 6, showminnoactive = 7, showna = 8, restore = 9, showdefault = 10, forceminimize = 11 } public static void minimizewindow(intptr hwnd) { showwindow(hwnd, showwindowcommands.minimize); } the problem is, animation executes, , method not return until animation finished.
i tried using dwmsetwindowattribute() method:
[dllimport("dwmapi.dll", preservesig = true)] static extern int dwmsetwindowattribute(intptr hwnd, uint attr, ref int attrvalue, int size); const uint dwm_transitionsforcedisabled = 3; public static void setenabled(intptr hwnd, bool enabled) { int attrval = enabled ? 0 : 1; dwmsetwindowattribute(hwnd, dwm_transitionsforcedisabled, ref attrval, 4); } but animations not suppressed. operating system windows 7, 32-bit.
not best option, can try calling systemparametersinfo() specifying spi_getanimation current setting window animations, , if enabled use spi_setanimation disable them before showing window, restore previous setting. example:
[structlayout(layoutkind.sequential)] public struct animationinfo { uint cbsize; int iminanimate; } [dllimport("user32.dll", setlasterror=true)] static extern bool systemparametersinfo(uint uiaction, uint uiparam, ref animationinfo pvparam, uint fwinini); const uint spi_getanimation = 72; const uint spi_setanimation = 73; public static void minimizewindow(intptr hwnd) { animationinfo anim; anim.cbsize = marshal.sizeof(anim); anim.iminanimate = 0; systemparametersinfo(spi_getanimation, 0, anim, 0); if (anim.iminanimate != 0) { anim.iminanimate = 0; systemparametersinfo(spi_setanimation, 0, anim, 0); showwindow(hwnd, showwindowcommands.minimize); anim.iminanimate = 1; systemparametersinfo(spi_setanimation, 0, anim, 0); } else showwindow(hwnd, showwindowcommands.minimize); } 