156 lines
3.4 KiB
Markdown
156 lines
3.4 KiB
Markdown
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# DpiManager（DPI 管理）
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| 方法名称 | 用途 |
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| :--- | :--- |
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| [GetSystemDPI](#GetSystemDPI) | 获取系统DPI，开启DPI感知后有效 |
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| [GetMonitorDPI](#GetMonitorDPI) | 获取某个显示器的DPI，开启DPI感知后有效 |
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| [GetMainMonitorDPI](#GetMainMonitorDPI) | 获取主显示器DPI，开启DPI感知后有效 |
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| [GetDPIFromRegistry](#GetDPIFromRegistry) | 从注册表获取DPI，不开启DPI感知也有效 |
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| [IsAdaptDPI](#IsAdaptDPI) | 是否程序自己适配DPI缩放效果 |
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| [SetAdaptDPI](#SetAdaptDPI) | 设置是否程序自己适配DPI缩放，默认不自己适配 |
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| [GetScale](#GetScale) | 获取当前界面缩放比 |
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| [SetScale](#SetScale) | 根据DPI值设置界面缩放比，只有程序自己处理DPI缩放时才有效 |
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| [ScaleInt](#ScaleInt) | 根据界面缩放比来缩放整数，只有程序自己处理DPI缩放时才有效 |
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| [ScaleSize](#ScaleSize) | 根据界面缩放比来缩放SIZE，只有程序自己处理DPI缩放时才有效 |
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| [ScalePoint](#ScalePoint) | 根据界面缩放比来缩放POINT，只有程序自己处理DPI缩放时才有效 |
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| [ScaleRect](#ScaleRect) | 根据界面缩放比来缩放RECT，只有程序自己处理DPI缩放时才有效 |
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### GetSystemDPI
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获取系统DPI，开启DPI感知后有效
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```cpp
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static UINT GetSystemDPI()
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```
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- 参 数：无
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- 返回值：UINT DPI
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### GetMonitorDPI
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获取某个显示器的DPI，开启DPI感知后有效
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```cpp
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static UINT GetMonitorDPI(HMONITOR hMonitor)
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```
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- 参 数：
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- `HMONITOR句柄
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- 返回值：UINT DPI
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### GetMainMonitorDPI
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获取主显示器DPI，开启DPI感知后有效
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```cpp
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static UINT GetMainMonitorDPI()
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```
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- 参 数：无
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- 返回值：UINT DPI
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### GetDPIFromRegistry
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从注册表获取DPI，不开启DPI感知也有效
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```cpp
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static UINT GetDPIFromRegistry()
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```
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- 参 数：无
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- 返回值：UINT DPI
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### IsAdaptDPI
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是否程序自己适配DPI缩放效果
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```cpp
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bool IsAdaptDPI()
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```
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- 参 数：无
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- 返回值：bool true 是，false 否
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### SetAdaptDPI
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设置是否程序自己适配DPI缩放，默认不自己适配
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```cpp
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bool SetAdaptDPI()
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```
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- 参 数：无
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- 返回值：bool true 设置成功，false 设置失败
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### GetScale
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获取当前界面缩放比
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```cpp
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UINT GetScale()
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```
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- 参 数：无
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- 返回值：UINT 缩放比
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### SetScale
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根据DPI值设置界面缩放比，只有程序自己处理DPI缩放时才有效
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```cpp
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void SetScale(UINT uDPI)
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```
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- 参 数：
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- `uDPI` DPI值
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- 返回值：void 无返回值
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### ScaleInt
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根据界面缩放比来缩放整数，只有程序自己处理DPI缩放时才有效
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```cpp
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int ScaleInt(int &iValue)
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```
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- 参 数：
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- `iValue` 整数
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- 返回值：int 缩放后的值
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### ScaleSize
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根据界面缩放比来缩放SIZE，只有程序自己处理DPI缩放时才有效
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```cpp
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void ScaleSize(SIZE &size)
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```
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- 参 数：
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- `pSize` SIZE指针
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- 返回值：void 无返回值
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### ScalePoint
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根据界面缩放比来缩放POINT，只有程序自己处理DPI缩放时才有效
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```cpp
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void ScalePoint(POINT &point)
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```
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- 参 数：
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- `pSize` SIZE指针
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- 返回值：void 无返回值
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### ScaleRect
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根据界面缩放比来缩放RECT，只有程序自己处理DPI缩放时才有效
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```cpp
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void ScaleRect(RECT &rect)
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```
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- 参 数：
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- `pSize` SIZE指针
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- 返回值：void 无返回值
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