// 移动窗口
func win_handler_startDrag(browser *cef.Browser, args []cef.V8Value) (result interface{}) {
fmt.Println("win_handler_startDrag")
h := win.HWND(browser.GetWindowHandle())
var pt win.POINT
win.GetCursorPos(&pt)
isDrag = true
win.PostMessage(h, win.WM_LBUTTONDOWN, win.HTCAPTION, uintptr(win.MAKELONG(uint16(pt.X), uint16(pt.Y))))
return
}
func TransparentWndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) (result uintptr) {
switch msg {
case win.WM_CREATE:
//a := *(*uintptr)(unsafe.Pointer(lParam))
//fmt.Printf("WM_CREATE %v\n", a)
result = win.DefWindowProc(hwnd, msg, wParam, lParam)
//case win.WM_NCPAINT:
// result = win.DefWindowProc(hwnd, msg, wParam, lParam)
case win.WM_LBUTTONDOWN:
//fmt.Printf("WM_LBUTTONDOWN\n")
if isEnableDrag {
win.SetCapture(hwnd)
win.GetWindowRect(hwnd, &rcWindow)
win.GetCursorPos(&dragPoint)
isDrag = true
}
result = 0
case win.WM_LBUTTONUP:
if win.GetCapture() == hwnd {
win.ReleaseCapture()
}
isDrag = false
result = 0
case win.WM_NCCALCSIZE:
wpCaptionLess := uintptr(win.GetProp(hwnd, WindowProp_CaptionLess))
//fmt.Printf("wpCaptionLess=%v\n", wpCaptionLess)
if wpCaptionLess == 1 && win.BOOL(wParam) == win.TRUE {
var size_param *win.NCCALCSIZE_PARAMS = (*win.NCCALCSIZE_PARAMS)(unsafe.Pointer(lParam))
size_param.Rgrc[2] = size_param.Rgrc[1]
size_param.Rgrc[1] = size_param.Rgrc[0]
result = 0
} else {
result = win.DefWindowProc(hwnd, msg, wParam, lParam)
}
//case win.WM_NCHITTEST:
//x := win.LOWORD(uint32(lParam))
//y := win.HIWORD(uint32(lParam))
//s := fmt.Sprintf("WM_NCHITTEST x,y=%v,%v\n", x, y)
//result = win.DefWindowProc(hwnd, msg, wParam, lParam)
case win.WM_MOUSEMOVE:
//fmt.Printf("WM_MOUSEMOVE\n")
if isDrag {
var pe win.POINT
win.GetCursorPos(&pe) // The new position for cursor pointer
left := rcWindow.Left + (pe.X - dragPoint.X) // The horizontal position of the new window
top := rcWindow.Top + (pe.Y - dragPoint.Y) // The vertical position of the new windows
//win.MoveWindow(hwnd,reWindow.Left,reWindow.Top,reWindow.Right,reWindow.Bottom,true);// Moving window
win.SetWindowPos(hwnd, 0, left, top, 0, 0, win.SWP_NOSIZE|win.SWP_NOZORDER)
}
case win.WM_SIZE:
// 最小化时不能调整Cef窗体，否则恢复时界面一片空白
if wParam == win.SIZE_RESTORED || wParam == win.SIZE_MAXIMIZED {
cef.WindowResized(unsafe.Pointer(hwnd))
}
case win.WM_CLOSE:
win.DestroyWindow(hwnd)
case win.WM_DESTROY:
cef.QuitMessageLoop()
default:
result = win.DefWindowProc(hwnd, msg, wParam, lParam)
}
//result = win.DefWindowProc(hwnd, msg, wParam, lParam)
return
}