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// 4 august 2014
package ui
// TODO clean this up relative to window_windows.go
import (
"fmt"
"unsafe"
)
// #include "winapi_windows.h"
import "C"
type layout struct {
hwnd C.HWND
closing *event
*sizer
}
func makeContainerWindowClass() error {
var errmsg *C.char
err := C.makeContainerWindowClass(&errmsg)
if err != 0 || errmsg != nil {
return fmt.Errorf("%s: %v", C.GoString(errmsg), syscall.Errno(err))
}
return nil
}
func newLayout(title string, width int, height int, child C.BOOL, control Control) *layout {
l := &layout{
sizer: new(sizer),
}
hwnd := C.newContainer(unsafe.Pointer(l))
if hwnd != l.hwnd {
panic(fmt.Errorf("inconsistency: hwnd returned by CreateWindowEx() (%p) and hwnd stored in container (%p) differ", hwnd, l.hwnd))
}
l.child = control
l.child.setParent(&controlParent{l.hwnd})
return l
}
func (l *layout) setParent(p *controlParent) {
C.controlSetParent(l.hwnd, p.hwnd)
}
//export storeContainerHWND
func storeContainerHWND(data unsafe.Pointer, hwnd C.HWND) {
l := (*layout)(data)
l.hwnd = hwnd
}
//export containerResize
func containerResize(data unsafe.Pointer, r *C.RECT) {
l := (*layout)(data)
// the origin of the window's content area is always (0, 0), but let's use the values from the RECT just to be safe
l.resize(int(r.left), int(r.top), int(r.right - r.left), int(r.bottom - r.top))
}
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