CComboBoxEx 不同 DPI、高度计算的问题
我想在窗体上添加 CComboBoxEx，但我必须将其与其他控件对齐并使其高度相同。
问题是我找不到获取此控件高度的正确方法。
如果我设置窗口矩形，则会影响下拉列表框。如果我强制它为某个固定大小，并且组合内的内容较高，则控件会被剪裁在底部。
有没有办法根据图像和当前 DPI 设置计算 ComboBoxEx 有多大？这样，如果我无法调整控件的内部填充，我至少可以扩展其他控件。据我所知，MSDN 根本没有涉及大小问题。
I want to add a CComboBoxEx on my form, but I have to align it with other controls and make it the same height.
The problem is that I can't find which is the correct way to get the height of this control.
If I set the window rectangle, that affects the drop down listbox. If I force it to be some fixed size, and the content inside the combo is higher, the control gets clipped at the bottom.
Is there a way to calculate how big the ComboBoxEx will be, based on image and current DPI settings? So that I could at least expand the other controls if I cannot adjust the internal padding of the control. MSDN doesn't touch the sizing issues at all as far as I've looked.
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组合框自动设置控件的高度，正如您所发现的，尝试设置自己的高度实际上会影响下拉列表的高度。
要获取控件的真实高度（以便您可以调整其他控件的大小），可以使用 GetWindowRect：
我不知道更改 Combo 控件本身的高度的好方法，坦率地说，我不相信这是可能的至少没有大量的子类化。因此，我实现了自己的组合式控件。
尽管它可能没有帮助，但您可能还想查看 GetComboBoxInfo() 函数，看看它是否提供了任何有用的信息。
ComboBoxes set the height of the control automatically, and as you've discovered, trying to set your own height actually affects the height of the drop-down list.
To get the real height of the control (so you can resize your other controls) you can use GetWindowRect:
I don't know of a good way to change the height of the Combo control itself, and frankly I don't believe it's possible at least without lots of subclassing. I have implemented my own combo-style control because of this.
Although it probably won't help, you may also like to have a look at the GetComboBoxInfo() function to see if that provides any useful information.