我想要做的就是浏览bmp并在基于对话框的应用程序中显示它...如何？ [英] All I want to do is browse for a bmp and display it scaled in a dialog based app....how?

问题描述

显然没有办法从文件中手动加载位图并将其缩放到静态控件中。

所有涉及createCompatibleDC（...）的建议只是不工作。

我试过让我的静态控件所有者绘制，创建一个自定义静态类来响应WM_DRAWITEM然后我在CStatic中获取ASSERT失败错误::  OnDrawItem（int nIDCtl，LPDRAWITEMSTRUCT lpDrawItemStruct）

显然我的DDX_Control（pDX，IDC_STATIC_BMP， m_staticBMP / * CBitmapCtrl * /）不起作用....为什么？

我选择的图像可能大于或小于staic控件的尺寸。 br />

解决方案

您好，

选择文件，使用CFileDialog。要加载，缩放和显示图片，您可以使用CxImage类：
https：// www。 codeproject.com/Articles/1300/CxImage

问候，Guido

Apparently there is no possible way to manually load the bitmap from a file and scale it into the static control.

All the suggestions involving createCompatibleDC(...) just don't work.

And I have tried making my static control owner draw, creates a custom static class that responds to WM_DRAWITEM but then I get a ASSERT failure error in CStatic:: OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)

So apparently my DDX_Control(pDX, IDC_STATIC_BMP, m_staticBMP/*CBitmapCtrl*/) does not work....why?

The image I select may be larger or smaller than the dimensions of the staic control.

解决方案

Hello,

to select a file, use CFileDialog. To load, scale and display the picture, you can use CxImage class: https://www.codeproject.com/Articles/1300/CxImage

Regards, Guido

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