UE C++一些记录

#include <windows/WindowsWindow.h>
#include "Windows/AllowWindowsPlatformTypes.h"
#include <windows.h>
#include <shellapi.h>
#include "Windows/HideWindowsPlatformTypes.h"



UUETuioBPLibrary::UUETuioBPLibrary(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{

}

float UUETuioBPLibrary::UETuioSampleFunction(float Param)
{
    return -1;
}

void UUETuioBPLibrary::MyWindowShow()
{
#if PLATFORM_WINDOWS
    TSharedPtr<FGenericWindow> NativeWindow = GEngine->GameViewport->GetWindow()->GetNativeWindow();
    FWindowsWindow* Window = static_cast<FWindowsWindow*>(NativeWindow.Get());
    HWND hWnd = Window->GetHWnd();
#endif // #if PLATFORM_WINDOWS

    ::ShowWindow(hWnd, SW_SHOWNORMAL);

}

void UUETuioBPLibrary::MyWindowHide()
{
#if PLATFORM_WINDOWS
    TSharedPtr<FGenericWindow> NativeWindow = GEngine->GameViewport->GetWindow()->GetNativeWindow();
    FWindowsWindow* Window = static_cast<FWindowsWindow*>(NativeWindow.Get());
    HWND hWnd = Window->GetHWnd();
#endif // #if PLATFORM_WINDOWS

    ::ShowWindow(hWnd, SW_MINIMIZE);
}

void UUETuioBPLibrary::MyWindowPos(int x, int y,int w,int h)
{
#if PLATFORM_WINDOWS
    TSharedPtr<FGenericWindow> NativeWindow = GEngine->GameViewport->GetWindow()->GetNativeWindow();
    FWindowsWindow* Window = static_cast<FWindowsWindow*>(NativeWindow.Get());
    HWND hWnd = Window->GetHWnd();
#endif // #if PLATFORM_WINDOWS
    

    DWORD mWindowExStyle;
    DWORD mWindowStyle;

    if (true)
    {

        mWindowExStyle = WS_EX_APPWINDOW;
        mWindowStyle = WS_POPUP;

    }

        

    ::SetWindowLongA(hWnd, GWL_STYLE, mWindowStyle);
    ::SetWindowLongA(hWnd, GWL_EXSTYLE, mWindowExStyle);
        
    ::SetWindowPos(hWnd, HWND_NOTOPMOST, x, y, w, h,SWP_FRAMECHANGED | SWP_SHOWWINDOW | SWP_NOZORDER);
        
    ::InvalidateRect(0, NULL, true);

    
    
    
}



void UUETuioBPLibrary::SetFrameRate(int inrate)
{
    
    FGenericPlatformRHIFramePacer::SetFramePace(inrate);
}

 

 

void BorderlessWindow::setBorderless(HWND hWnd, int x, int y, int w, int h, bool borderless) {

    mBorderless = false;

    //mWnd = WindowFromDC(wglGetCurrentDC());

    if (mBorderless != borderless) {
        mBorderless = borderless;
        if (mBorderless) {
            mWindowExStyle = WS_EX_APPWINDOW;
            mWindowStyle = WS_POPUP;
        }
        else {
            mWindowExStyle = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;            // Window Extended Style
            mWindowStyle = true ? WS_OVERLAPPEDWINDOW
                : (WS_OVERLAPPEDWINDOW & ~WS_THICKFRAME);                            // Windows Style
        }

        //POINT upperLeft;
        //upperLeft.x = upperLeft.y = 0;
        //::ClientToScreen(hWnd, &upperLeft );
        //RECT windowRect;
        //::GetClientRect(hWnd, &windowRect );
        //printf("%i", ::GetLastError());
        //windowRect.left += upperLeft.x; windowRect.right += upperLeft.x;
        //windowRect.top += upperLeft.y; windowRect.bottom += upperLeft.y;
        //::AdjustWindowRectEx( &windowRect, mWindowStyle, FALSE, mWindowExStyle );        // Adjust Window To True Requested Size

        ::SetWindowLongA(hWnd, GWL_STYLE, mWindowStyle);
        ::SetWindowLongA(hWnd, GWL_EXSTYLE, mWindowExStyle);
        /*::SetWindowPos(hWnd, HWND_TOP, windowRect.left, windowRect.top, windowRect.right - windowRect.left, windowRect.bottom - windowRect.top,
            SWP_FRAMECHANGED|SWP_SHOWWINDOW|SWP_NOZORDER );*/
        ::SetWindowPos(hWnd, HWND_NOTOPMOST, x, y, w, h,
            SWP_FRAMECHANGED | SWP_SHOWWINDOW | SWP_NOZORDER);
        if (mBorderless)
            ::InvalidateRect(0, NULL, TRUE);

    }
}

void BorderlessWindow::setTransparent(HWND hWnd, COLORREF clr, BYTE byAlpha, DWORD dwFlags) {

    typedef BOOL(FAR PASCAL *Fun)(HWND, COLORREF, BYTE, DWORD);
    Fun SetTransparentFun;
    HMODULE     hModule = LoadLibraryA("User32.DLL");
    if (hModule)
    {
        SetTransparentFun = (Fun)GetProcAddress(hModule, "SetLayeredWindowAttributes");
        if (SetTransparentFun&&hWnd)
        {
            SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) | 0x80000L);
            SetTransparentFun(hWnd, clr, byAlpha, dwFlags);
        }
        FreeLibrary(hModule);
    }
}

 

如果声明代理中需要传入数组，如下

 DECLARE_DYNAMIC_DELEGATE_OneParam(FSerachDataByStringValDelegate,
 TArray<FPOIData>, poiDataSearchArr);


在蓝图层面是会报错的，报错信息如下
customevent_0 signature error: the function/event ‘customevent_0’ does not match the necessary signature - has the delegate or function/event changed?

解决办法如下：

 DECLARE_DYNAMIC_DELEGATE_OneParam(FSerachDataByStringValDelegate,
 const TArray<FPOIData>&, poiDataSearchArr);