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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package runtime_test
import (
"syscall"
"unsafe"
"testing"
)
func TestStdCall(t *testing.T) {
type Rect struct {
left, top, right, bottom int32
}
h, e := syscall.LoadLibrary("user32.dll")
if e != 0 {
t.Fatal("LoadLibrary(USER32)")
}
p, e := syscall.GetProcAddress(h, "UnionRect")
if e != 0 {
t.Fatal("GetProcAddress(USER32.UnionRect)")
}
res := Rect{}
expected := Rect{1, 1, 40, 60}
a, _, _ := syscall.Syscall(uintptr(p),
3,
uintptr(unsafe.Pointer(&res)),
uintptr(unsafe.Pointer(&Rect{10, 1, 14, 60})),
uintptr(unsafe.Pointer(&Rect{1, 2, 40, 50})))
if a != 1 || res.left != expected.left ||
res.top != expected.top ||
res.right != expected.right ||
res.bottom != expected.bottom {
t.Error("stdcall USER32.UnionRect returns", a, "res=", res)
}
}
func TestCDecl(t *testing.T) {
h, e := syscall.LoadLibrary("user32.dll")
if e != 0 {
t.Fatal("LoadLibrary(USER32)")
}
p, e := syscall.GetProcAddress(h, "wsprintfA")
if e != 0 {
t.Fatal("GetProcAddress(USER32.wsprintfA)")
}
var buf [50]byte
a, _, _ := syscall.Syscall6(uintptr(p),
5,
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(syscall.StringBytePtr("%d %d %d"))),
1000, 2000, 3000, 0)
if string(buf[:a]) != "1000 2000 3000" {
t.Error("cdecl USER32.wsprintfA returns", a, "buf=", buf[:a])
}
}
func TestCallback(t *testing.T) {
h, e := syscall.LoadLibrary("user32.dll")
if e != 0 {
t.Fatal("LoadLibrary(USER32)")
}
pEnumWindows, e := syscall.GetProcAddress(h, "EnumWindows")
if e != 0 {
t.Fatal("GetProcAddress(USER32.EnumWindows)")
}
pIsWindow, e := syscall.GetProcAddress(h, "IsWindow")
if e != 0 {
t.Fatal("GetProcAddress(USER32.IsWindow)")
}
counter := 0
cb := syscall.NewCallback(func(hwnd syscall.Handle, lparam uintptr) uintptr {
if lparam != 888 {
t.Error("lparam was not passed to callback")
}
b, _, _ := syscall.Syscall(uintptr(pIsWindow), 1, uintptr(hwnd), 0, 0)
if b == 0 {
t.Error("USER32.IsWindow returns FALSE")
}
counter++
return 1 // continue enumeration
})
a, _, _ := syscall.Syscall(uintptr(pEnumWindows), 2, cb, 888, 0)
if a == 0 {
t.Error("USER32.EnumWindows returns FALSE")
}
if counter == 0 {
t.Error("Callback has been never called or your have no windows")
}
}
func TestCallbackInAnotherThread(t *testing.T) {
// TODO: test a function which calls back in another thread: QueueUserAPC() or CreateThread()
}
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