如何使用VC ++更改桌面背景 [英] How to change desktop background using VC++

问题描述

我当前正在尝试使用SystemParametersInfo（）
来更改桌面背景，但在键入内容时却没有给我任何错误，但是在运行程序时，我收到带有黄色三角形的警告，并说那里是在KernelBase.dll中引发的某种异常，然后说尚未加载某些PDB。我很久以前就这样做了，并且能够使它正常工作，但我不记得有人能再帮我什么了？这是我写的

I am currently trying to change my desktop background using SystemParametersInfo() vs doesnt give me any errors when I type my stuff in but when I run the program I get this warning with the yellow triangle and it says there was some kind of exception thrown at KernelBase.dll and then it says that some PDB has not been loaded. I did this a long time ago and was able to get it to work but i dont remember how anymore can anyone help me out? here is what I have written

SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, "C:/Windows/Downloaded Program Files/Flowers.jpg", SPIF_UPDATEINIFILE);

有人知道为什么会这样以及如何解决吗？感谢您的任何帮助，谢谢

does anyone know why this is happening and how to fix it? Any help is appreciated, thanks

推荐答案

您需要在 L 中添加文件路径。 L C：/ Windows / Downloaded Program Files / Flowers.jpg
。

You need to add L to the file path. L"C:/Windows/Downloaded Program Files/Flowers.jpg" .

#include "stdafx.h"
#include <windows.h>

int main() {

    int return_value = SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, L"d:/flower1.jpg", SPIF_UPDATEINIFILE);

    return 0;
}

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