// NewWindow creates a new window and assigns it to a widget.
func newWindow(w sparta.Widget) {
var win *window
rect := w.Property(sparta.Geometry).(image.Rectangle)
if p := w.Property(sparta.Parent); p != nil {
pW := p.(sparta.Widget)
pWin := pW.Window().(*window)
win = &window{
w: w,
back: pWin.back,
fore: pWin.fore,
pos: rect.Min,
}
count := len(pW.Property(sparta.Childs).([]sparta.Widget))
pW.SetProperty(sparta.Childs, w)
win.id = w32.CreateWindowEx(0, stringToUTF16(childClass), nil,
uint(w32.WS_CHILDWINDOW|w32.WS_VISIBLE),
rect.Min.X, rect.Min.Y, rect.Dx(), rect.Dy(),
pWin.id, w32.HMENU(count),
w32.HINSTANCE(w32.GetWindowLong(pWin.id, w32.GWL_HINSTANCE)), nil)
if win.id == 0 {
log.Printf("w32: error: %v\n", getLastError())
os.Exit(1)
}
} else {
win = &window{
w: w,
back: bkGround,
fore: frGround,
}
win.id = w32.CreateWindowEx(uint(w32.WS_EX_CLIENTEDGE),
stringToUTF16(baseClass), stringToUTF16(""),
uint(w32.WS_OVERLAPPEDWINDOW),
150, 150, rect.Dx()+extraX, rect.Dy()+extraY,
0, 0, instance, nil)
if win.id == 0 {
log.Printf("w32: error: %v\n", getLastError())
os.Exit(1)
}
}
widgetTable[win.id] = w
w.SetWindow(win)
w32.ShowWindow(win.id, w32.SW_SHOWDEFAULT)
if !w32.UpdateWindow(win.id) {
log.Printf("w32: error: %v\n", getLastError())
os.Exit(1)
}
}
func (app *DemoApp) Initialize() {
app.CreateDeviceIndependentResources()
hInstance := w32.GetModuleHandle("")
icon := w32.LoadIcon(0, w32.MakeIntResource(w32.IDI_APPLICATION))
wndProc := func(hwnd w32.HWND, msg uint, wParam, lParam uintptr) uintptr {
return app.WndProc(hwnd, msg, wParam, lParam)
}
wndClass := w32.WNDCLASSEX{
Size: uint(unsafe.Sizeof(w32.WNDCLASSEX{})),
Style: w32.CS_HREDRAW | w32.CS_VREDRAW,
WndProc: syscall.NewCallback(wndProc),
ClsExtra: 0,
WndExtra: 0,
Instance: hInstance,
Icon: icon,
Cursor: w32.LoadCursor(0, w32.MakeIntResource(w32.IDC_ARROW)),
Background: 0,
MenuName: nil,
ClassName: syscall.StringToUTF16Ptr("D2DDemoApp"),
IconSm: icon,
}
w32.RegisterClassEx(&wndClass)
dpiX, dpiY := app.factory.GetDesktopDpi(app.factory)
app.hwnd = w32.CreateWindowEx(
0,
syscall.StringToUTF16Ptr("D2DDemoApp"),
syscall.StringToUTF16Ptr("Hello Windows"),
w32.WS_OVERLAPPEDWINDOW,
w32.CW_USEDEFAULT,
w32.CW_USEDEFAULT,
int(math.Ceil(float64(640*dpiX/96))),
int(math.Ceil(float64(640*dpiY/96))),
0,
0,
hInstance,
nil)
w32.ShowWindow(app.hwnd, w32.SW_SHOW)
w32.UpdateWindow(app.hwnd)
}
func (this *Window) FlushImage() {
w32.InvalidateRect(this.hwnd, nil, false)
w32.UpdateWindow(this.hwnd)
}