From 9673954adfd5a563072e085df5e09d427557466b Mon Sep 17 00:00:00 2001
From: Rr42
Date: Tue, 26 Jun 2018 14:58:14 +0530
Subject: Added "export as text"  functionality.

---
 ldmicro/lib/linuxUI/linuxUI.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'ldmicro/lib/linuxUI')

diff --git a/ldmicro/lib/linuxUI/linuxUI.cpp b/ldmicro/lib/linuxUI/linuxUI.cpp
index e65c7d5..0d08de5 100644
--- a/ldmicro/lib/linuxUI/linuxUI.cpp
+++ b/ldmicro/lib/linuxUI/linuxUI.cpp
@@ -282,6 +282,9 @@ HANDLE GetStockObject(int fnObject)
 
 void SelectObject(HCRDC hcr, HFONT hfont)
 {
+    if (hcr ==NULL)
+        return;
+    
     cairo_select_font_face(hcr, hfont->lpszFace,
         hfont->fdwItalic ? CAIRO_FONT_SLANT_ITALIC : CAIRO_FONT_SLANT_NORMAL,
         hfont->fnWeight == FW_BOLD ? CAIRO_FONT_WEIGHT_BOLD : CAIRO_FONT_WEIGHT_NORMAL);
@@ -326,6 +329,9 @@ HFONT CreateFont(int nHeight, int nWidth, int nOrientation, int fnWeight,
 
 void SetBkColor(HWID widget, HCRDC hcr, COLORREF bkCol)
 {
+    if (hcr == NULL)
+        return;
+    
     gtk_widget_override_background_color(GTK_WIDGET(widget), 
                         GTK_STATE_FLAG_NORMAL, &bkCol);
 
@@ -349,12 +355,18 @@ void SetBkColor(HWID widget, HCRDC hcr, COLORREF bkCol)
 
 void SetTextColor(HCRDC hcr, COLORREF color)
 {
+    if (hcr == NULL)
+        return;
+    
     HdcCurrentTextColor = color;
     gdk_cairo_set_source_rgba (hcr, &color);
 }
 
 void TextOut(HWID hWid, HCRDC hcr, int nXStart, int nYStart, LPCTSTR lpString, int cchString)
 {
+    if (hcr == NULL)
+        return;
+    
     nYStart += 30;
     
     cairo_text_extents_t extents;
@@ -419,6 +431,9 @@ BOOL InvalidateRect(HWID hWid, const RECT *lpRect, BOOL bErase)
 
 int FillRect(HCRDC hDC, const RECT *lprc, HBRUSH hbr)
 {
+    if (hDC == NULL)
+        return -1;
+    
     GDRECT gdrc;
     RECT_to_GDRECT(lprc, &gdrc);
 
@@ -432,6 +447,9 @@ int FillRect(HCRDC hDC, const RECT *lprc, HBRUSH hbr)
 
 BOOL PatBlt(HCRDC hdc, int nXLeft, int nYLeft, int nWidth, int nHeight, DWORD dwRop, HBRUSH hbr)
 {
+    if (hdc == NULL)
+        return FALSE;
+    
     cairo_set_source_rgb(hdc, hbr->red, hbr->green, hbr->blue);
     cairo_rectangle(hdc, nXLeft, nYLeft + 20, nWidth, nHeight);
     cairo_stroke_preserve(hdc);
-- 
cgit