win32 CTabctrl:绘制“子”活动选项卡中的窗口
我有一个可调整大小的对话框,其中包含 CTabCtrl,选项卡控件有 4 个选项卡,单击时会显示四个不同的 CTreeCtrl 之一。
我从 CTabCtrl 派生了一个类,它跟踪其“子”控件,如下所示:
...
class Container: public CTabCtrl {
vector<CWnd*> _children;
....
int Container::AddTab(CWnd* Child) {
CString txt;Child->GetWindowText(txt);
_children.push_back(Child);
int idx = this->InsertItem(this->GetItemCount(), txt, 0);
if(idx == 0) {
CRect c;
this->GetWindowRect(&c);
GetParent()->ScreenToClient(&c);
this->AdjustRect(FALSE, c);
Child->SetWindowPos(&wndTop, c.left, c.top, c.Width(), c.Height(), SWP_SHOWWINDOW);
this->SetCurSel(idx);
} else Child->ShowWindow(SW_HIDE);
return idx;
}
我尝试像这样绘制子控件:
void Container::OnTabChanging(NMHDR*, LRESULT* pResult) { // hide the changed from tab
int selected = this->GetCurSel();
if(selected != -1)
{
// move old window to bottom of the zorder and hide
_children[selected]->SetWindowPos(&wndBottom, 0, 0, 0, 0, SWP_NOSIZE|SWP_NOMOVE|SWP_HIDEWINDOW);
ASSERT(!_children[selected]->IsWindowVisible());
}
*pResult = 0;
}
// show the child for the tab being changed to
void CNodeContainer::OnTabChanged(NMHDR* pNMHDR, LRESULT* pResult) {
int selected = this->GetCurSel();
ASSERT(selected!=-1);
CRect c;
this->GetWindowRect(&c);
GetParent()->ScreenToClient(&c);
this->AdjustRect(FALSE, c);
_children[selected]->SetWindowPos(&wndTop, c.left, c.top, c.Width(), c.Height(), SWP_SHOWWINDOW|SWP_FRAMECHANGED);
*pResult = 0;
}
然而,子控件虽然出现,但并不总是正确绘制,它们有点像将它们的内容混合在一起,只有当我单击它们时才显示正确的内容(实际的树控件)。
这是在 zorder 中绘制和移动窗口的最佳方式吗?我错过了什么?
非常感谢
bg
I have a resizable dialog that contains a CTabCtrl, the tab control has 4 tabs that when clicked on displays one of four different CTreeCtrls.
I have derived a class from CTabCtrl, which keeps track of its "child" controls like so:
...
class Container: public CTabCtrl {
vector<CWnd*> _children;
....
int Container::AddTab(CWnd* Child) {
CString txt;Child->GetWindowText(txt);
_children.push_back(Child);
int idx = this->InsertItem(this->GetItemCount(), txt, 0);
if(idx == 0) {
CRect c;
this->GetWindowRect(&c);
GetParent()->ScreenToClient(&c);
this->AdjustRect(FALSE, c);
Child->SetWindowPos(&wndTop, c.left, c.top, c.Width(), c.Height(), SWP_SHOWWINDOW);
this->SetCurSel(idx);
} else Child->ShowWindow(SW_HIDE);
return idx;
}
And I attempt to draw the child controls like so:
void Container::OnTabChanging(NMHDR*, LRESULT* pResult) { // hide the changed from tab
int selected = this->GetCurSel();
if(selected != -1)
{
// move old window to bottom of the zorder and hide
_children[selected]->SetWindowPos(&wndBottom, 0, 0, 0, 0, SWP_NOSIZE|SWP_NOMOVE|SWP_HIDEWINDOW);
ASSERT(!_children[selected]->IsWindowVisible());
}
*pResult = 0;
}
// show the child for the tab being changed to
void CNodeContainer::OnTabChanged(NMHDR* pNMHDR, LRESULT* pResult) {
int selected = this->GetCurSel();
ASSERT(selected!=-1);
CRect c;
this->GetWindowRect(&c);
GetParent()->ScreenToClient(&c);
this->AdjustRect(FALSE, c);
_children[selected]->SetWindowPos(&wndTop, c.left, c.top, c.Width(), c.Height(), SWP_SHOWWINDOW|SWP_FRAMECHANGED);
*pResult = 0;
}
However the child controls, whilst they appear, don't always draw correctly, they sort of mix up their content together and only show the right content when i click on them (the actual tree controls).
Is this the best way of drawing and moving windows around in the zorder, what am I missing?
Many thanks
bg
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不要只改变孩子的 z 顺序,而是完全隐藏除最上面的孩子之外的所有孩子。我在自定义 CTabCtrl 中使用相同的方法,效果很好。
Instead of just changing the z-order of your children, completely hide every child except the top one. I use the same approach in a custom CTabCtrl and it works fine.
现在它已修复 - 问题来自于这样一个事实:在 tabctrl 的调整大小代码中,我使用 movewindow 将子窗口移动到位 - 这是更改子窗口的 zorder。
Its fixed now - the problem came from the fact that the in the resize code for the tabctrl, I was using movewindow to move the child windows into place - This was changing the zorder of the child windows.
这可以解决窗口或选项卡出现后的问题。尝试使用
这个->RedrawWindow();
在 OnTabChanging() 函数返回之前。
This could solve the problem after your window or tab apears. Try to use
this->RedrawWindow();
In OnTabChanging() function before it returns.