Add DisableMinimizeButton and SwitchToThisWindow functions

window.go

@@ -74,6 +74,9 @@ type Window interface {
 	// By default this is nil.
 	Cursor() Cursor
 
+	// Disable minimized button
+	DisableMinimizeButton() error
+
 	// Dispose releases the operating system resources, associated with the
 	// Window.
 	//
@@ -277,6 +280,8 @@ type Window interface {
 	// RootWidgets like *MainWindow or *Dialog and relative to the parent for
 	// child Windows.
 	Y() int
+
+	SwitchToThisWindow()
 }
 
 type calcTextSizeInfo struct {
@@ -657,6 +662,21 @@ func (wb *WindowBase) AddDisposable(d Disposable) {
 	wb.disposables = append(wb.disposables, d)
 }
 
+// DisableMinimizeButton disables minimized button
+func (wb *WindowBase) DisableMinimizeButton() error {
+	style := uint32(win.GetWindowLong(wb.hWnd, win.GWL_STYLE))
+	if style == 0 {
+		return lastError("GetWindowLong")
+	}
+	if newStyle := style &^ win.WS_MINIMIZEBOX; newStyle != style {
+		win.SetLastError(0)
+		if win.SetWindowLong(wb.hWnd, win.GWL_STYLE, int32(newStyle)) == 0 {
+			return lastError("SetWindowLong")
+		}
+	}
+	return nil
+}
+
 // Dispose releases the operating system resources, associated with the
 // *WindowBase.
 //
@@ -1906,3 +1926,11 @@ func (wb *WindowBase) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr)
 
 	return win.DefWindowProc(hwnd, msg, wParam, lParam)
 }
+
+func (wb *WindowBase) SwitchToThisWindow() {
+	libuser32 := win.MustLoadLibrary("User32.dll")
+	syscall.Syscall(win.MustGetProcAddress(libuser32, "SwitchToThisWindow"), 2,
+		uintptr(wb.hWnd),
+		1,
+		0)
+}