gdiplus

windows-snapshot-tool/src/main.cpp

@@ -21,6 +21,7 @@ void doScreenshot();
 void InitNotifyIconData();
 int CaptureImage(HWND hWnd, const wchar_t* filename);
 void getRaspiStorage(LPWSTR out);
+void SavePng(HBITMAP hBmp, LPCWSTR lpszFilename);
 
 
 
@@ -254,6 +255,7 @@ void doScreenshot()
 {
     WCHAR path[12];
     getRaspiStorage(path);
+    MessageBox(Hwnd, path, L"Storage path", MB_OK);
     CaptureImage(Hwnd, L"file.bmp");
 }
 
@@ -299,7 +301,7 @@ void getRaspiStorage(LPWSTR out) {
 		    if (GetVolumeInformationW(drive, volumeName, ARRAYSIZE(volumeName), &serialNumber, &maxComponentLen, &fileSystemFlags, fileSystemName, ARRAYSIZE(fileSystemName)))
 		    {
 			if (wcscmp(volumeName, L"SCREENSHOTS")) {
-				wcsncpy(drive, out, sizeof(out));
+				wcsncpy(out, drive, sizeof(out));
 			}
 		    }
 		}
@@ -405,6 +407,9 @@ int CaptureImage(HWND hWnd, const wchar_t* filename) {
         return -1;
     }
 
+    SavePng(hBmp, filename);
+
+/*
     // Get the BITMAP from the HBITMAP
     GetObject(hBmp,sizeof(BITMAP),&bmpScreen);
      
@@ -469,7 +474,7 @@ int CaptureImage(HWND hWnd, const wchar_t* filename) {
 
     //Close the handle for the file that was created
     CloseHandle(hFile);
-
+*/
     // clean up
     DeleteObject(hbmScreen);
     DeleteObject(hBmp);
@@ -518,22 +523,38 @@ int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
  * https://stackoverflow.com/questions/997175/how-can-i-take-a-screenshot-and-save-it-as-jpeg-on-windows
  * https://docs.microsoft.com/en-us/windows/desktop/gdiplus/-gdiplus-converting-a-bmp-image-to-a-png-image-use
  */
-void SaveJpeg(HBITMAP hBmp, LPCWSTR lpszFilename, ULONG uQuality)
+void SavePng(HBITMAP hBmp, LPCWSTR lpszFilename)
 {
-    //using namespace Gdiplus;
+    using namespace Gdiplus;
+
+    // Initialize GDI+.
+    GdiplusStartupInput gdiplusStartupInput;
+    ULONG_PTR gdiplusToken;
+    GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
+
     Gdiplus::GpBitmap* pBitmap;
     Gdiplus::DllExports::GdipCreateBitmapFromHBITMAP(hBmp, NULL, &pBitmap);
 
     CLSID imageCLSID;
-    GetEncoderClsid(L"image/jpeg", &imageCLSID);
+    INT result;
+    result = GetEncoderClsid(L"image/png", &imageCLSID);
 
-    Gdiplus::EncoderParameters encoderParams;
+    if (result < 0) {
+        MessageBox(Hwnd, L"The PNG encoder is not installed",L"Failed", MB_OK);
+        return;
+    }
+
+/*    Gdiplus::EncoderParameters encoderParams;
     encoderParams.Count = 1;
     encoderParams.Parameter[0].NumberOfValues = 1;
     encoderParams.Parameter[0].Guid  = Gdiplus::EncoderQuality;
     encoderParams.Parameter[0].Type  = Gdiplus::EncoderParameterValueTypeLong;
-    encoderParams.Parameter[0].Value = &uQuality;
+    encoderParams.Parameter[0].Value = &uQuality;*/
+
+    Gdiplus::DllExports::GdipSaveImageToFile(pBitmap, lpszFilename, &imageCLSID, NULL);
+
+    DeleteObject(pBitmap);
 
-    Gdiplus::DllExports::GdipSaveImageToFile(pBitmap, lpszFilename, &imageCLSID, &encoderParams);
+    GdiplusShutdown(gdiplusToken);
 }