mfc里给picture控件加载一张位图，然后在位图上画一条线，该怎么做

Posted 2023-04-02

首先需要更改下控件id，然后为你的图片控件关联变量m_pic——默认的静态图片控件id是IDC_STATIC,是不能直接添加变量的。

画线：

CDC *pDC = m_pic.GetWindowDC();

pDC->MoveTo(0,0);

pDC->LineTo(100,100);

参考技术A 先获取图片控件的DC,然后利用DC相关函数加载位图和画线。追问

我知道加载位图，也知道画线，但不清楚怎么具体结合，你能具体代码解释一下吗

mfc Picture Control 控件属性

知识点：
 Picture Control 控件属性
 CStatic类
 图片控件
 图片控件使用

一、图片控件属性
Picture Control 属性:
Type:Frame //框架
Type:Etched Horz水平蚀刻线条
Type:Etched Vert垂真蚀刻线条
Type:Rectangle实心矩形
Type:Bitmap位图
Type:Icon  图标
Type:Enhanced Metafile 增强图元 支持wmf格式图片
Type:Owner Draw   自绘图
Color:颜色
    Black:黑
    Gray:灰色
    White:白色
    Etched:蚀刻

二、Picture Control 控件类
CStatic::
SetBitmap
Specifies a bitmap to be displayed in the static control.
GetBitmap
Retrieves the handle of the bitmap previously set with SetBitmap.

SetIcon
Specifies an icon to be displayed in the static control.
GetIcon
Retrieves the handle of the icon previously set with SetIcon.

SetCursor
Specifies a cursor image to be displayed in the static control.
GetCursor
Retrieves the handle of the cursor image previously set with SetCursor.

SetEnhMetaFile
Specifies an enhanced metafile to be displayed in the static control.
GetEnhMetaFile
Retrieves the handle of the enhanced metafile previously set with SetEnhMetaFile